A combination of Mike Bostock’s raster reprojection, automatic projection tiles and a MapBox terrain example.
Any Tiles, Any Projection
This approach will work for any multi-resolution Mercator-based tileset that is subdivided recursively in the form of a quadtree, combined with any inverse projection, i.e. a mapping from 2D to spherical coordinates.
This means that you can take beautiful raster tiles, say from MapBox or Stamen, and reproject using your projection of choice:
