A base layer using OSM tiles. Tiles graciously provided by OSM (tile.openstreetmap.org) To use this layer, you must provide attribution to OSM. See: http://wiki.openstreetmap.org/wiki/Tile_usage_policy http://wiki.openstreetmap.org/wiki/Legal_FAQ#I_would_like_to_use_OpenStreetMap_maps._How_should_I_credit_you.3F Usage: map.mapTypes.set('osm', new OSMBase()); You can do this by creating a new OSMBase.Attribution like this: new OSMBase.Attribution(map) The attribution will be shown in the bottom right of the map when the OSM layer is activated.