[bornon5]

The Street View UI in the Google Earth app lets you walk around using first-person shooter WASD controls.

The surrounding textures are pasted onto simple 3D rectangles approximating buildings and houses. As you move, they transition into each other, giving you the least distorted view possible. With a fast connection, it feels pretty realistic, like you're walking around the neighborhood.

Almost like how mipmaps, if done well in 3D games, aren't really noticeable.