This golf ball–shaped former desert real estate office now houses a UFO museum.

This small museum is home to some of the oldest and best-preserved dinosaur specimens found in Montana.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

The only retired U.S. nuclear missile silo that is open to the public.

A small Wyoming town is home to the state's oldest-operating soda fountain.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

The crumbling structure is a rare surviving relic of the area's bygone mining industry.

The first declared National Monument in the United States.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Calidum et Deliciose Succosum!

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

The cliff and rock formations are made out of Sioux Quartzite.

This Wild West attraction is alive with glitching automatons.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.

A fitting attraction for the corn capital of the world.

An entire city block built completely out of petrified wood.

One man's quest to save his town with a trail of record-breaking sculptures.

This simple badlands butte is the highest point in North Dakota and may be the only high point to charge admission.

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

Part of a secret 1970s nuclear defense program is now open to the public.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

This third-generation institution is one of the last in London that still cures its own salt beef for epic sandwiches.