An artificial crater field that trained astronauts for lunar exploration.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

An urban laboratory.

The world's largest military aircraft cemetery.

Tucked away atop a quaint Alabama pharmacy is this tiny display of antique medical tools.

A strange history museum, with items accumulated by a pair of globe trotting spies.

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

Formerly secret, precariously perched boulders.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

A collection of colorful dinosaurs hidden in an actual rainforest.

The longest continuous lava tube in Oregon.

Mine your own precious stones.

The stone-covered graves lie within the ruins of an Old West ghost town.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

The statues honor the state transportation employees who've died while performing their work-related duties.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

This sidewalk tribute honors Colorado's great culinary creation.

Its collection contains relics from the devastating disaster that set the town ablaze.

This fireplace-turned-monument pays tribute to the assassinated U.S. president.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

This Old West prison built into the side of a cliff was said to be inescapable.