Based on many stories of lights hovering in the woods. Personally, when I need to go behind a tree, I turn off my headlights.

Based on a free model from 3D Cafe. I can also render this on light backgrounds for paid licensing.

This is based on a drawing I did years ago, so it's look is more reminiscent of that imagined drawing than actual Mayan temples. The Olmec head is fairly accurate.

A long forgotten magical place, or is it what happens when no one is around to see water play? Based on my experiments with drawing water ripples with the terrain editor in Bryce.