diff --git a/modules/markers-generator.js b/modules/markers-generator.js
index 751b6879..6cf307fd 100644
--- a/modules/markers-generator.js
+++ b/modules/markers-generator.js
@@ -2,6 +2,7 @@
 
 window.Markers = (function () {
   let config = [];
+  let occupied = [];
 
   function getDefaultConfig() {
     const culturesSet = document.getElementById("culturesSet").value;
@@ -60,12 +61,13 @@ window.Markers = (function () {
 
   function generateTypes() {
     TIME && console.time("addMarkers");
-    // TODO: don't put multiple markers to the same cell
 
     config.forEach(({type, icon, multiplier, fn}) => {
       if (multiplier === 0) return;
       fn(type, icon, multiplier);
     });
+
+    occupied = [];
     TIME && console.timeEnd("addMarkers");
   }
 
@@ -95,18 +97,19 @@ window.Markers = (function () {
   function addMarker({cell, type, icon, dx, dy, px}) {
     const i = pack.markers.length;
     const [x, y] = getMarkerCoordinates(cell);
-    const marker = {i, icon, type, x, y};
+    const marker = {i, icon, type, x, y, cell};
     if (dx) marker.dx = dx;
     if (dy) marker.dy = dy;
     if (px) marker.px = px;
     pack.markers.push(marker);
+    occupied[cell] = true;
     return "marker" + i;
   }
 
   function addVolcanoes(type, icon, multiplier) {
     const {cells} = pack;
 
-    let mountains = Array.from(cells.i.filter(i => cells.h[i] >= 70).sort((a, b) => cells.h[b] - cells.h[a]));
+    let mountains = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] >= 70).sort((a, b) => cells.h[b] - cells.h[a]));
     let quantity = getQuantity(mountains, 10, 300, multiplier);
     if (!quantity) return;
     const highestMountains = mountains.slice(0, 20);
@@ -124,7 +127,7 @@ window.Markers = (function () {
   function addHotSprings(type, icon, multiplier) {
     const {cells} = pack;
 
-    let springs = Array.from(cells.i.filter(i => cells.h[i] > 50).sort((a, b) => cells.h[b] - cells.h[a]));
+    let springs = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] > 50).sort((a, b) => cells.h[b] - cells.h[a]));
     let quantity = getQuantity(springs, 30, 800, multiplier);
     if (!quantity) return;
     const highestSprings = springs.slice(0, 40);
@@ -142,7 +145,7 @@ window.Markers = (function () {
   function addMines(type, icon, multiplier) {
     const {cells} = pack;
 
-    let hillyBurgs = Array.from(cells.i.filter(i => cells.h[i] > 47 && cells.burg[i]));
+    let hillyBurgs = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] > 47 && cells.burg[i]));
     let quantity = getQuantity(hillyBurgs, 1, 15, multiplier);
     if (!quantity) return;
 
@@ -166,7 +169,7 @@ window.Markers = (function () {
 
     const meanFlux = d3.mean(cells.fl.filter(fl => fl));
     let bridges = Array.from(
-      cells.i.filter(i => cells.burg[i] && cells.t[i] !== 1 && burgs[cells.burg[i]].population > 20 && cells.r[i] && cells.fl[i] > meanFlux)
+      cells.i.filter(i => !occupied[i] && cells.burg[i] && cells.t[i] !== 1 && burgs[cells.burg[i]].population > 20 && cells.r[i] && cells.fl[i] > meanFlux)
     );
     let quantity = getQuantity(bridges, 1, 5, multiplier);
     if (!quantity) return;
@@ -186,7 +189,7 @@ window.Markers = (function () {
   function addInns(type, icon, multiplier) {
     const {cells} = pack;
 
-    let taverns = Array.from(cells.i.filter(i => cells.h[i] >= 20 && cells.road[i] > 4 && cells.pop[i] > 10));
+    let taverns = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] >= 20 && cells.road[i] > 4 && cells.pop[i] > 10));
     let quantity = getQuantity(taverns, 1, 100, multiplier);
     if (!quantity) return;
 
@@ -437,7 +440,7 @@ window.Markers = (function () {
   function addLighthouses(type, icon, multiplier) {
     const {cells} = pack;
 
-    const lighthouses = Array.from(cells.i.filter(i => cells.harbor[i] > 6 && cells.c[i].some(c => cells.h[c] < 20 && cells.road[c])));
+    const lighthouses = Array.from(cells.i.filter(i => !occupied[i] && cells.harbor[i] > 6 && cells.c[i].some(c => cells.h[c] < 20 && cells.road[c])));
     let quantity = getQuantity(lighthouses, 1, 2, multiplier);
     if (!quantity) return;
 
@@ -453,7 +456,7 @@ window.Markers = (function () {
   function addWaterfalls(type, icon, multiplier) {
     const {cells} = pack;
 
-    const waterfalls = Array.from(cells.i.filter(i => cells.r[i] && cells.h[i] >= 50 && cells.c[i].some(c => cells.h[c] < 40 && cells.r[c])));
+    const waterfalls = Array.from(cells.i.filter(i => cells.r[i] && !occupied[i] && cells.h[i] >= 50 && cells.c[i].some(c => cells.h[c] < 40 && cells.r[c])));
     const quantity = getQuantity(waterfalls, 1, 5, multiplier);
     if (!quantity) return;
 
@@ -468,7 +471,7 @@ window.Markers = (function () {
   function addBattlefields(type, icon, multiplier) {
     const {cells, states} = pack;
 
-    let battlefields = Array.from(cells.i.filter(i => cells.state[i] && cells.pop[i] > 2 && cells.h[i] < 50 && cells.h[i] > 25));
+    let battlefields = Array.from(cells.i.filter(i => !occupied[i] && cells.state[i] && cells.pop[i] > 2 && cells.h[i] < 50 && cells.h[i] > 25));
     let quantity = getQuantity(battlefields, 50, 700, multiplier);
     if (!quantity) return;
 
@@ -487,7 +490,7 @@ window.Markers = (function () {
   function addDungeons(type, icon, multiplier) {
     const {cells} = pack;
 
-    let dungeons = Array.from(cells.i.filter(i => cells.pop[i] && cells.pop[i] < 3));
+    let dungeons = Array.from(cells.i.filter(i => !occupied[i] && cells.pop[i] && cells.pop[i] < 3));
     let quantity = getQuantity(dungeons, 30, 200, multiplier);
     if (!quantity) return;
 
@@ -506,7 +509,7 @@ window.Markers = (function () {
   function addLakeMonsters(type, icon, multiplier) {
     const {features} = pack;
 
-    const lakes = features.filter(feature => feature.type === "lake" && feature.group === "freshwater");
+    const lakes = features.filter(feature => feature.type === "lake" && feature.group === "freshwater" && !occupied[feature.firstCell]);
     let quantity = getQuantity(lakes, 2, 10, multiplier);
     if (!quantity) return;
 
@@ -525,7 +528,7 @@ window.Markers = (function () {
   function addSeaMonsters(type, icon, multiplier) {
     const {cells, features} = pack;
 
-    const sea = Array.from(cells.i.filter(i => cells.h[i] < 20 && cells.road[i] && features[cells.f[i]].type === "ocean"));
+    const sea = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] < 20 && cells.road[i] && features[cells.f[i]].type === "ocean"));
     let quantity = getQuantity(sea, 50, 700, multiplier);
     if (!quantity) return;
 
@@ -543,7 +546,7 @@ window.Markers = (function () {
   function addHillMonsters(type, icon, multiplier) {
     const {cells} = pack;
 
-    const hills = Array.from(cells.i.filter(i => cells.h[i] >= 50 && cells.pop[i]));
+    const hills = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] >= 50 && cells.pop[i]));
     let quantity = getQuantity(hills, 30, 600, multiplier);
     if (!quantity) return;
 
@@ -573,7 +576,9 @@ window.Markers = (function () {
   function addSacredMountains(type, icon, multiplier) {
     const {cells, cultures} = pack;
 
-    let lonelyMountains = Array.from(cells.i.filter(i => cells.h[i] >= 70 && cells.c[i].some(c => cells.culture[c]) && cells.c[i].every(c => cells.h[c] < 60)));
+    let lonelyMountains = Array.from(
+      cells.i.filter(i => !occupied[i] && cells.h[i] >= 70 && cells.c[i].some(c => cells.culture[c]) && cells.c[i].every(c => cells.h[c] < 60))
+    );
     let quantity = getQuantity(lonelyMountains, 1, 5, multiplier);
     if (!quantity) return;
 
@@ -592,7 +597,7 @@ window.Markers = (function () {
   function addSacredForests(type, icon, multiplier) {
     const {cells, cultures} = pack;
 
-    let temperateForests = Array.from(cells.i.filter(i => cells.culture[i] && [6, 8].includes(cells.biome[i])));
+    let temperateForests = Array.from(cells.i.filter(i => !occupied[i] && cells.culture[i] && [6, 8].includes(cells.biome[i])));
     let quantity = getQuantity(temperateForests, 30, 1000, multiplier);
     if (!quantity) return;
 
@@ -610,7 +615,7 @@ window.Markers = (function () {
   function addSacredPineries(type, icon, multiplier) {
     const {cells, cultures} = pack;
 
-    let borealForests = Array.from(cells.i.filter(i => cells.culture[i] && cells.biome[i] === 9));
+    let borealForests = Array.from(cells.i.filter(i => !occupied[i] && cells.culture[i] && cells.biome[i] === 9));
     let quantity = getQuantity(borealForests, 30, 800, multiplier);
     if (!quantity) return;
 
@@ -628,7 +633,7 @@ window.Markers = (function () {
   function addSacredPalmGroves(type, icon, multiplier) {
     const {cells, cultures} = pack;
 
-    let oasises = Array.from(cells.i.filter(i => cells.culture[i] && cells.biome[i] === 1 && cells.pop[i] > 1 && cells.road[i]));
+    let oasises = Array.from(cells.i.filter(i => !occupied[i] && cells.culture[i] && cells.biome[i] === 1 && cells.pop[i] > 1 && cells.road[i]));
     let quantity = getQuantity(oasises, 1, 100, multiplier);
     if (!quantity) return;
 
@@ -646,7 +651,7 @@ window.Markers = (function () {
   function addBrigands(type, icon, multiplier) {
     const {cells} = pack;
 
-    let roads = Array.from(cells.i.filter(i => cells.culture[i] && cells.road[i] > 4));
+    let roads = Array.from(cells.i.filter(i => !occupied[i] && cells.culture[i] && cells.road[i] > 4));
     let quantity = getQuantity(roads, 50, 100, multiplier);
     if (!quantity) return;
 
@@ -712,7 +717,7 @@ window.Markers = (function () {
   function addPirates(type, icon, multiplier) {
     const {cells} = pack;
 
-    let searoutes = Array.from(cells.i.filter(i => cells.h[i] < 20 && cells.road[i]));
+    let searoutes = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] < 20 && cells.road[i]));
     let quantity = getQuantity(searoutes, 40, 300, multiplier);
     if (!quantity) return;
 
@@ -728,7 +733,7 @@ window.Markers = (function () {
 
   function addStatues(type, icon, multiplier) {
     const {cells} = pack;
-    let statues = Array.from(cells.i.filter(i => cells.h[i] >= 20 && cells.h[i] < 40));
+    let statues = Array.from(cells.i.filter(i => !occupied[i] && cells.h[i] >= 20 && cells.h[i] < 40));
     let quantity = getQuantity(statues, 80, 1200, multiplier);
     if (!quantity) return;
 
@@ -762,7 +767,7 @@ window.Markers = (function () {
 
   function addRuines(type, icon, multiplier) {
     const {cells} = pack;
-    let ruins = Array.from(cells.i.filter(i => cells.culture[i] && cells.h[i] >= 20 && cells.h[i] < 60));
+    let ruins = Array.from(cells.i.filter(i => !occupied[i] && cells.culture[i] && cells.h[i] >= 20 && cells.h[i] < 60));
     let quantity = getQuantity(ruins, 80, 1200, multiplier);
     if (!quantity) return;
 
@@ -782,7 +787,10 @@ window.Markers = (function () {
 
   function addPortals(type, icon, multiplier) {
     const {burgs} = pack;
-    let portals = burgs.slice(1, Math.ceil(burgs.length / 10) + 1).map(burg => [burg.name, burg.cell]);
+    let portals = burgs
+      .slice(1, Math.ceil(burgs.length / 10) + 1)
+      .filter(({cell}) => !occupied[cell])
+      .map(burg => [burg.name, burg.cell]);
     let quantity = getQuantity(portals, 16, 8, multiplier);
     if (!quantity) return;
 
diff --git a/modules/ui/layers.js b/modules/ui/layers.js
index ffa021fa..5988d537 100644
--- a/modules/ui/layers.js
+++ b/modules/ui/layers.js
@@ -1558,13 +1558,14 @@ const getPin = (shape = "bubble", fill = "#fff", stroke = "#000") => {
 };
 
 function drawMarker(marker, rescale = 1) {
-  const {i, icon, x, y, dx = 50, dy = 50, px = 12, size = 30} = marker;
+  const {i, icon, x, y, dx = 50, dy = 50, px = 12, size = 30, pin, fill, stroke} = marker;
   const id = `marker${i}`;
   const zoomSize = rescale ? Math.max(rn(size / 5 + 24 / scale, 2), 1) : 1;
   const viewX = rn(x - zoomSize / 2, 1);
   const viewY = rn(y - zoomSize, 1);
+  const pinHTML = getPin(pin, fill, stroke);
 
-  return `<svg id="${id}" viewbox="0 0 30 30" width="${zoomSize}" height="${zoomSize}" x="${viewX}" y="${viewY}"><g>${getPin()}</g><text x="${dx}%" y="${dy}%" font-size="${px}px" >${icon}</text></svg>`;
+  return `<svg id="${id}" viewbox="0 0 30 30" width="${zoomSize}" height="${zoomSize}" x="${viewX}" y="${viewY}"><g>${pinHTML}</g><text x="${dx}%" y="${dy}%" font-size="${px}px" >${icon}</text></svg>`;
 }
 
 function toggleLabels(event) {
diff --git a/modules/ui/markers-editor.js b/modules/ui/markers-editor.js
index 5664bbbe..907e1860 100644
--- a/modules/ui/markers-editor.js
+++ b/modules/ui/markers-editor.js
@@ -1,11 +1,10 @@
 "use strict";
-function editMarker() {
+function editMarker(markerI) {
   if (customization) return;
   closeDialogs(".stable");
 
-  const element = d3.event.target.closest("svg");
-  const marker = pack.markers.find(({i}) => Number(element.id.slice(6)) === i);
-  if (!marker) return;
+  const [element, marker] = getElement(markerI, d3.event);
+  if (!marker || !element) return;
 
   elSelected = d3.select(element).raise().call(d3.drag().on("start", dragMarker)).classed("draggable", true);
 
@@ -53,6 +52,18 @@ function editMarker() {
     listen(markerRemove, "click", confirmMarkerDeletion)
   ];
 
+  function getElement(markerI, event) {
+    if (event) {
+      const element = event.target?.closest("svg");
+      const marker = pack.markers.find(({i}) => Number(element.id.slice(6)) === i);
+      return [element, marker];
+    }
+
+    const element = document.getElementById(`marker${markerI}`);
+    const marker = pack.markers.find(({i}) => i === markerI);
+    return [element, marker];
+  }
+
   function getSameTypeMarkers() {
     const currentType = marker.type;
     if (!currentType) return [marker];
@@ -76,8 +87,10 @@ function editMarker() {
 
       const size = marker.size || 30;
       const zoomSize = Math.max(rn(size / 5 + 24 / scale, 2), 1);
+
       marker.x = rn(x + dx + zoomSize / 2, 1);
       marker.y = rn(y + dy + zoomSize, 1);
+      marker.cell = findCell(marker.x, marker.y);
     });
   }
 
@@ -230,6 +243,7 @@ function editMarker() {
     pack.markers = pack.markers.filter(m => m.i !== marker.i);
     element.remove();
     $("#markerEditor").dialog("close");
+    if (document.getElementById("markersOverviewRefresh").offsetParent) markersOverviewRefresh.click();
   }
 
   function closeMarkerEditor() {
diff --git a/modules/ui/markers-overview.js b/modules/ui/markers-overview.js
index 3d4664a8..6dd0f412 100644
--- a/modules/ui/markers-overview.js
+++ b/modules/ui/markers-overview.js
@@ -22,16 +22,26 @@ function overviewMarkers() {
   });
 
   const listeners = [
+    listen(body, "click", handleLineClick),
     listen(markersOverviewRefresh, "click", addLines),
-    listen(markersAddFromOverview, "click", () => {}),
+    listen(markersAddFromOverview, "click", toggleAddMarker),
     listen(markersGenerationConfig, "click", configMarkersGeneration),
     listen(markersRemoveAll, "click", triggerRemoveAll)
   ];
 
+  function handleLineClick(ev) {
+    const el = ev.target;
+    const i = +el.parentNode.dataset.i;
+
+    if (el.classList.contains("icon-pencil")) return openEditor(i);
+    if (el.classList.contains("locks")) return toggleLockStatus(el, i);
+    if (el.classList.contains("icon-trash-empty")) return triggerRemove(i);
+  }
+
   function addLines() {
     const lines = pack.markers
       .map(({i, type, icon, lock}) => {
-        return `<div class="states" data-id=${i} data-type="${type}">
+        return `<div class="states" data-i=${i} data-type="${type}">
         <div data-tip="Marker icon and type" style="width:12em">${icon} ${type}</div>
         <span data-tip="Edit marker" class="icon-pencil"></span>
         <span class="locks pointer ${lock ? "icon-lock" : "icon-lock-open inactive"}" onmouseover="showElementLockTip(event)"></span>
@@ -46,6 +56,15 @@ function overviewMarkers() {
     applySorting(markersHeader);
   }
 
+  function openEditor(i) {
+    const marker = pack.markers.find(marker => marker.i === i);
+    if (!marker) return;
+
+    const {x, y} = marker;
+    zoomTo(x, y, 8, 2000);
+    editMarker(i);
+  }
+
   function highlightMarkerOn(event) {
     if (!layerIsOn("toggleLabels")) toggleLabels();
     // burgLabels.select("[data-id='" + burg + "']").classed("drag", true);
@@ -55,33 +74,17 @@ function overviewMarkers() {
     // burgLabels.selectAll("text.drag").classed("drag", false);
   }
 
-  function zoomInto() {
-    const burg = +this.parentNode.dataset.id;
-    const label = document.querySelector("#burgLabels [data-id='" + burg + "']");
-    const x = +label.getAttribute("x"),
-      y = +label.getAttribute("y");
-    zoomTo(x, y, 8, 2000);
-  }
-
-  function toggleLockStatus() {
-    const burg = +this.parentNode.dataset.id;
-    toggleBurgLock(burg);
-    if (this.classList.contains("icon-lock")) {
-      this.classList.remove("icon-lock");
-      this.classList.add("icon-lock-open");
-      this.classList.add("inactive");
+  function toggleLockStatus(el, i) {
+    const marker = pack.markers.find(marker => marker.i === i);
+    if (marker.lock) {
+      delete marker.lock;
+      el.className = "locks pointer icon-lock-open inactive";
     } else {
-      this.classList.remove("icon-lock-open");
-      this.classList.add("icon-lock");
-      this.classList.remove("inactive");
+      marker.lock = true;
+      el.className = "locks pointer icon-lock";
     }
   }
 
-  function openEditor() {
-    const burg = +this.parentNode.dataset.id;
-    editBurg(burg);
-  }
-
   function triggerRemove(i) {
     confirmationDialog({
       title: "Remove marker",
@@ -91,10 +94,16 @@ function overviewMarkers() {
     });
   }
 
+  function toggleAddMarker() {
+    markersAddFromOverview.classList.toggle("pressed");
+    addMarker.click();
+  }
+
   function removeMarker(i) {
     notes = notes.filter(note => note.id !== `marker${i}`);
     pack.markers = pack.markers.filter(marker => marker.i !== i);
     document.getElementById(`marker${i}`)?.remove();
+    addLines();
   }
 
   function triggerRemoveAll() {
diff --git a/modules/ui/tools.js b/modules/ui/tools.js
index 120427a5..697d87eb 100644
--- a/modules/ui/tools.js
+++ b/modules/ui/tools.js
@@ -688,6 +688,7 @@ function toggleAddMarker() {
 
   addFeature.querySelectorAll("button.pressed").forEach(b => b.classList.remove("pressed"));
   addMarker.classList.add("pressed");
+  markersAddFromOverview.classList.add("pressed");
 
   viewbox.style("cursor", "crosshair").on("click", addMarkerOnClick);
   tip("Click on map to add a marker. Hold Shift to add multiple", true);
@@ -713,6 +714,7 @@ function addMarkerOnClick() {
 
   if (d3.event.shiftKey === false) {
     document.getElementById("markerAdd").classList.remove("pressed");
+    document.getElementById("markersAddFromOverview").classList.remove("pressed");
     unpressClickToAddButton();
   }
 }