diff --git a/World/heidelberg.xml b/World/heidelberg.tpl
similarity index 70%
rename from World/heidelberg.xml
rename to World/heidelberg.tpl
index e894d0c..f9f1763 100644
--- a/World/heidelberg.xml
+++ b/World/heidelberg.tpl
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <map xmlns="http://www.gpxsee.org/map/1.0">
 	<name>GIScience Heidelberg</name>
-	<url>https://korona.geog.uni-heidelberg.de/tiles/roads/x=$x&amp;y=$y&amp;z=$z</url>
+	<url>https://api.openrouteservice.org/mapsurfer/$z/$x/$y.png?api_key=insert-your-apikey-here</url>
 	<copyright>Map data: © OpenStreetMap contributors (ODbL) | Rendering: © GIScience Heidelberg (CC-SA)</copyright>
 </map>