SDK for iOS supports 3D representations of buildings and structures. This feature is called extruded buildings, and you can display them by setting the extrudedBuildingsVisible property to YES in NMAMapView.
Note: The Extruded Buildings feature should not be used together with Raster Tiles. While enabling the extrudedBuildingsVisible property, ensure that you have also disabled Raster Tiles. For more information on these features, please see Custom Raster Tiles and 3D Venues.