A museum built around a bus-sized fossil on the side of the highway.

A self-taught astronomer fell in love with the stars and built his own observatory in Colombia.

The world's largest ecosystem of its kind is home to South America's only native species of bear.

No one knows for sure why this town's dead refuse to rot.

The world's only pure blue lizard lives exclusively on this secluded tropical island.

This collection of ancient, mountaintop, underground tombs was once hidden by decades of bloodshed.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Landscape of bizarrely shaped desert mountains and innumerable rock carvings.