When it comes to pictures, everything is possible, either at capture time or at postprocessing time.
There is an effect that consists in making a regular-size scene look like a miniature scale scene. Most of the time it is referred to as tilt-shift photography, but actually tilt shift is not limited to miniature-like photography. You can get this effect either with a lens that tilts (change the angle between lens and camera) and shifts (change the position of the lens without changing the angle), or with a postprocessing operation (after the photo was taken). It's really fun!
If you want to experiment, you can use photoshop, use an iPhone application like tiltshift generator (there is an application for that) or an online app (I believe camera+ does it too).
Check out these creative commons photos.