diff --git a/overviewer_core/aux_files/genPOI.py b/overviewer_core/aux_files/genPOI.py
index 655872f..4c84d10 100755
--- a/overviewer_core/aux_files/genPOI.py
+++ b/overviewer_core/aux_files/genPOI.py
@@ -418,18 +418,36 @@ def create_marker_from_filter_result(poi, result):
         else:   # ...otherwise default to display text.
             d['hovertext'] = result['text']
 
-        if 'polyline' in result and hasattr(result['polyline'], '__iter__'):
-            d['polyline'] = []
-            for point in result['polyline']:
-                # point.copy() would work, but this validates better
-                d['polyline'].append(dict(x=point['x'], y=point['y'], z=point['z']))
-            if isinstance(result['color'], str):
-                d['strokeColor'] = result['color']
+        if "icon" in result:
+            d["icon"] = result['icon']
+        if "createInfoWindow" in result:
+            d["createInfoWindow"] = result['createInfoWindow']
 
-            if "icon" in result:
-                d["icon"] = result['icon']
-            if "createInfoWindow" in result:
-                d["createInfoWindow"] = result['createInfoWindow']
+        # Polylines and polygons
+        if ('polyline' in result and hasattr(result['polyline'], '__iter__')) or \
+            'polygon' in result and hasattr(result['polygon'], '__iter__'):
+            # If the points form a line or closed shape
+            d['isLine'] = 'polyline' in result
+            # Collect points
+            d['points'] = []
+            for point in (result['polyline'] if d['isLine'] else result['polygon']):
+                d['points'].append(dict(x=point['x'], y=point['y'], z=point['z']))
+
+            # Options and default values
+            if 'color' in result:
+                d['strokeColor'] = result['color']
+            else:
+                d['strokeColor'] = 'red'
+
+            if 'fill' in result:
+                d['fill'] = result['fill']
+            else:
+                d['fill'] = not d['isLine'] # fill polygons by default
+
+            if 'weight' in result:
+                d['strokeWeight'] = result['weight']
+            else:
+                d['strokeWeight'] = 2
     else:
         raise ValueError("Got an %s as result for POI with id %s"
                          % (type(result).__name__, poi['id']))
diff --git a/overviewer_core/data/js_src/util.js b/overviewer_core/data/js_src/util.js
index 52643af..507bce9 100644
--- a/overviewer_core/data/js_src/util.js
+++ b/overviewer_core/data/js_src/util.js
@@ -379,27 +379,48 @@ overviewer.util = {
                     console.log("this tileset has markers:", obj);
                     obj.marker_groups = {};
 
+                    // For every group of markers
                     for (var mkidx = 0; mkidx < markers[obj.path].length; mkidx++) {
+                        // Create a Leaflet layer group
                         var marker_group = new L.layerGroup();
                         var marker_entry = markers[obj.path][mkidx];
                         L.Util.setOptions(marker_group, {default_checked: marker_entry.checked});
                         var icon =  L.divIcon({html: `<img class="ov-marker" src="${marker_entry.icon}">`});
 
+                        // For every marker in group
                         for (var dbidx = 0; dbidx < markersDB[marker_entry.groupName].raw.length; dbidx++) {
-                            var db = markersDB[marker_entry.groupName].raw[dbidx];
-                            var latlng = overviewer.util.fromWorldToLatLng(db.x, db.y, db.z, obj);
-                            var m_icon;
-                            if (db.icon != undefined) {
-                                m_icon = L.divIcon({html: `<img class="ov-marker" src="${db.icon}">`});
+                            let db = markersDB[marker_entry.groupName].raw[dbidx];
+                            var layerObj = undefined;
+
+                            // Shape or marker?
+                            if ('points' in db) {
+                                // Convert all coords
+                                plLatLng = db['points'].map(function(p) {
+                                    return overviewer.util.fromWorldToLatLng(p.x, p.y, p.z, obj);
+                                });
+                                options = {
+                                    color: db['strokeColor'],
+                                    weight: db['strokeWeight'],
+                                    fill: db['fill']
+                                };
+                                layerObj = db['isLine'] ? L.polyline(plLatLng, options) : L.polygon(plLatLng, options);
+                                // TODO: add other config options (fill color, fill opacity)
                             } else {
-                                m_icon = icon;
+                                // Convert coords
+                                let latlng = overviewer.util.fromWorldToLatLng(db.x, db.y, db.z, obj);
+                                // Set icon and use default icon if not specified
+                                let m_icon = L.divIcon({html: `<img class="ov-marker" src="${db.icon == undefined ? marker_entry.icon : db.icon}">`});
+                                // Create marker
+                                layerObj = new L.marker(latlng, {icon: m_icon, title: db.hovertext});
                             }
-                            let new_marker = new L.marker(latlng, {icon: m_icon, title: db.hovertext});
+                            // Add popup to marker
                             if (marker_entry.createInfoWindow) {
-                                new_marker.bindPopup(db.text);
+                                layerObj.bindPopup(db.text);
                             }
-                            marker_group.addLayer(new_marker);
+                            // Add the polyline or marker to the layer
+                            marker_group.addLayer(layerObj);
                         }
+                        // Save marker group
                         obj.marker_groups[marker_entry.displayName] = marker_group;
                     }
                 }
diff --git a/overviewer_core/data/web_assets/regions.js b/overviewer_core/data/web_assets/regions.js
index cef6ff0..21da8f2 100644
--- a/overviewer_core/data/web_assets/regions.js
+++ b/overviewer_core/data/web_assets/regions.js
@@ -7,11 +7,10 @@ var world = "top";
 markersDB[groupName] = {
 	"raw": [
 		{
-		"fillColor": "#00FF00",
-		"fillOpacity": 0.2,
 		"strokeColor": "#FF0000",
-		"strokeOpacity": 1,
-		"polygon" : [
+		"strokeWeight": 2,
+		"fill": true,
+		"polyline" : [
 			{"x": 347, "y": 67, "z": 95},
 			{"x": 347, "y": 77, "z": 95},
 			{"x": 347, "y": 77, "z": 105},
@@ -19,7 +18,7 @@ markersDB[groupName] = {
 			{"x": 347, "y": 67, "z": 105}
 		]}
 	],
-	"name": "Regions",
+	"name": groupName,
 	"created": false
 }
 
@@ -31,4 +30,4 @@ markers[world].push(
       "displayName": displayName, 
       "checked": true
 	});
-*/
\ No newline at end of file
+*/