Native Americans built this circle of stones, which was used to predict astronomical events.

Population: 1.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A popular rock that acted as a waymarker for American pioneers.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

Mexico's astounding mummy museum with "the world's smallest mummy."

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.