In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

A spiritual vortex among the red rocks in Sedona.

America's only nuclear missile silo open to the public.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Shoreline strewn with the remains of ghostly fallen trees.

These tiny statues form a terracotta army from China's Han dynasty.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Recently revamped museum of Fijian history located within a gorgeous colonial-era garden.

Four hundred granite steps were built into this massive rock by the National Park Service.

Quite simply the largest tree in the world (by volume).

This hidden fire lookout offers spectacular views of Sequoia National Park.

The second-largest giant sequoia in the world.

Stroll through a wonderland of stupendous moss-covered trees.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This dilapidated ship carcass covered in trees is a striking sight.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.