A vast collection of rare, historical, and vintage supercomputers.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

This quirky curiosity shop takes its cues from the world's bazaars.

The statues commemorate the legendary mass killing of escaped circus monkeys.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

Tour the sci-fi-esque reality of governmental disease management.

Naked scientists race around the pole in the frigid cold to try to join Antarctica's exclusive 300 Club.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The remains of one of America's first radiation testing grounds still rest ominously in a Georgia forest.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.