The remains of this hell for leather wild west town can still be found in the Arizona desert.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

This naval gun is fired every day at noon, an odd timekeeping tradition the origin of which is local legend.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

This futuristic German television spire is actually the world's largest digital clock.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

A dazzling temple featuring a towering 12-meter golden Buddha.

A local scoured more than 1,000 acres for stone to create his masterpiece.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

One of the few surviving "Wigwam"-themed motels.

The world's longest known cave system.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

This historic hotel invented the chocolate brownie.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Vines grow up the metal bars in this public park created from an old machine factory.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

France's most famous cemetery, with some of its most curious tombs.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.