diff --git a/README.md b/README.md
index 0aab581..adcf19c 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ map web page for plotting "things" on.
 
 ![Map Image](https://dceejay.github.io/pages/images/redmap.png)
 
-### Changes
+ - v1.0.20 - Add buildings overlay.
  - v1.0.19 - Add circle mode - specify name, lat, lon and radius.
  - v1.0.18 - Correct .photourl property to match .photoUrl as per docs
  - v1.0.17 - Removed Mapquest maps. Bug fixes - reduced leakage of listeners being added.
diff --git a/package.json b/package.json
index 0714c6e..787d0dd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-contrib-web-worldmap",
-    "version"       : "1.0.19",
+    "version"       : "1.0.20",
     "description"   : "A Node-RED node to provide a web page of a world map for plotting things on.",
     "dependencies"  : {
         "express": "4.*",
diff --git a/worldmap/index.html b/worldmap/index.html
index f24e3da..a01277e 100644
--- a/worldmap/index.html
+++ b/worldmap/index.html
@@ -52,6 +52,7 @@
     <script type="text/javascript" src="leaflet/L.Terminator.js"></script>
     <script type="text/javascript" src="leaflet/tile.stamen.js"></script>
     <script type="text/javascript" src="leaflet/leaflet-openweathermap.js"></script>
+    <script type="text/javascript" src="leaflet/OSMBuildings-Leaflet.js"></script>
 
     <script type="text/javascript" src="leaflet/dialog-polyfill.js"></script>
     <link rel="stylesheet" type="text/css" href="leaflet/dialog-polyfill.css"/>
@@ -653,6 +654,9 @@ overlays["pressure"] = L.tileLayer('http://{s}.tile.openweathermap.org/map/press
 
 overlays["weather"] = L.OWM.current({interval:30, minZoom:8, appId:"9ae11d4f6f9bed61f32fc061f715cc71"});
 
+overlays["buildings"] = new OSMBuildings(map).load();
+map.removeLayer(overlays["buildings"]);
+
 // Add the shipping navigation markers
 //var OpenSeaMap = L.tileLayer('http://tiles.openseamap.org/seamark/{z}/{x}/{y}.png', {
 //    attribution: 'Map data: &copy; <a href="http://www.openseamap.org">OpenSeaMap</a> contributors'
diff --git a/worldmap/leaflet/OSMBuildings-Leaflet.js b/worldmap/leaflet/OSMBuildings-Leaflet.js
new file mode 100644
index 0000000..904e0a5
--- /dev/null
+++ b/worldmap/leaflet/OSMBuildings-Leaflet.js
@@ -0,0 +1,48 @@
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+t.set=function(b){F.set(b);return this};var ta=function(){};t.each=function(b){ta=function(a){return b(a)};return this};var ua=function(){};t.click=function(b){ua=function(a){return b(a)};return this};u.VERSION="0.2.2b";u.ATTRIBUTION='&copy; <a href="http://osmbuildings.org">OSM Buildings</a>';ca.OSMBuildings=u})(this);
diff --git a/worldmap/worldmap.appcache b/worldmap/worldmap.appcache
index b5d139a..0ff293c 100644
--- a/worldmap/worldmap.appcache
+++ b/worldmap/worldmap.appcache
@@ -1,5 +1,5 @@
 CACHE MANIFEST
-# date: Sep 11th v1.0.18
+# date: Oct 18th v1.0.20
 
 CACHE:
 index.html
@@ -39,6 +39,7 @@ leaflet/leaflet.markercluster.freezable-src.js
 leaflet/leaflet.measurecontrol.css
 leaflet/leaflet.measurecontrol.js
 leaflet/leaflet.select-layers.min.js
+leaflet/OSMBuildings-Leaflet.js
 leaflet/socket.io-1.4.5.js
 leaflet/tile.stamen.js
 leaflet/images/layers-2x.png