Home to a timed geyser created by complete accident.

Supposedly Satanic numbers adorn this preserved submarine sail.

Home to the deepest rift anywhere on Earth.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A sculpture of a giant man escaping from the depths of the Earth.

Like Stonehenge, but with boats and oodles more charm.

This museum presents a dogged pursuit of 500 years of veterinary history.

The only pig museum in the U.S. holds one of the world's largest collections of pig items.

The only remaining Cold War–era Minuteman II missile control center in Missouri.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

A cave 150 feet beneath Kansas City is the perfect climate for growing 10,000 delicate orchids.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

This quaint museum lets you take a ride on its antique carousels.

Hundreds of samples of "Devil's Rope" hide in a defunct vintage elevator.

An idle pastime becomes a record holder in Boys Town, Nebraska.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.