Tiles: Mapbox.com Aerial
Example #7 - Demo showing 3D terrain, 3D model and 3D camera
This example demonstrates how to add add 3D terrain plus a 3D model and look at it with a 3D camera in the BA3 Altus Mapping Engine. The camera points at Mt. Rainier. The tile set here is the aerial tiles from Mapbox.com. Jsfiddle forces the use of https servers for tiles, but almost any tile server is possible in your own apps. See http://tinyurl.com/h8wahej for details.
Maps: © Mapbox © OpenStreetMap