This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

An enormous, 30-story-deep hole in the middle of Guatemala City.

This rare wildlife haven in Singapore feels like you're in the tropical rainforest.

Terrapins of all colors and shapes are quick to bring fascination (and possibly long life) at this museum.

A Buddhist theme park brings you a Buddhist version of Hell.

Time has stopped at the house where Gandhi died.

An ancient iron pillar in Delhi that seems to be rustproof.

A startling, centuries-old subterranean marvel hides in plain sight.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Ruins of a German Castle on top of a towering stone pillar.

A unique rock formation that only a few have managed to venture inside.