The largest game reserve in Africa is home to thousands of species but refuses to house humans.

A glacier pocked with ice caves and surrounded by rainforests.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

Huge stone depressions which may have acted as an Incan agricultural experiment.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

A remarkably intact castle that once was the largest in Ireland.

This gem-encrusted temple is said to contain some of the Buddha's hair which can make the deaf hear and the blind see.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

This massive solar system model is sprawled out across Maine's suburban wilderness.