London's smallest police station is barely the size of a phone booth.

Hear the quietest sound from across the dome.

Catacombs turned marketplace.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

This Native American settlement dates back to the Pueblo II period.

A sharp bend in a dramatic river canyon cut through red rocks.

Most-visited and most-photographed slot canyon in the American Southwest.

The location where the iconic movie character declared it was time to go home.

This balancing rock is one of Utah's most unusual geological formations.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The fifth-longest natural arch in the world, and the longest outside China.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A tunnel with windows, so you don't miss out on the impressive views.

Named after an outlaw who used the basin as a hideout.

The drama of nature in full effect in this Nevada State Park.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

This lighthouse has been guiding shipping into the Golden Gate since before the American Civil War.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.