The zoom/2D/3D toggle is in the middle right part of the default screen.
Tap it to expand the toggle to 3 separate buttons: Zoom in, 2D/3D toggle, and Zoom out. This expanded view collapses into the single “±” icon after 5 seconds of inactivity.
The 2D option displays the map from above:
The 3D view is tilted:
3D buildings
You can turn 3D buildings on or off in both map views. Some landmarks are represented by 3D models for easier orientation (usually in larger urban areas).