An experimental, automotive replica of Stonehenge.

This rustic old building is said to be the most photographed barn in America.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

A bust of the first president welcomes visitors to the only town in America called George, Washington.

The mayor made the declaration in 2004.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

This popular pitstop lives up to its name.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

A peculiar forest that was handcrafted for government experiments.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

European castle ruins in an American state park are actually the product of death and grief.

A large stone map of Arkansas awaits visitors to its highest point.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

Alabama has a fiberglass Stonehenge. With apologies to Spinal Tap, this one is full-size.

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

The only free-standing, vertical sundial in the US was keeping standard time before it was even invented.

At 207 feet, one of the world's longest continuous escalators.

Toss a Frisbee through the ruins of this Colorado gold mining town.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This hollow steel globe is the second-largest in the world.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.