The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

Exact replica of the ancient monument, but much, much lighter.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

Taxidermy, Cigar Store Indians, A Model of a New York Tenement and Delicious Draft Root Beer.

This town is home to the world’s largest arch constructed entirely of elk antlers.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

Former hotel turned into haunted playground.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

This combination shop and museum is filled with curious items and artifacts.

This historic Idaho island is home to a strange timeshare museum, a homemade mini-golf course, and an outhouse named Aunt Fanny.

This oddity shop contains everything from antique tools to a human skeleton.

This pop-culture shop also offers the chance to become part of their favorite tv show or movie.

"Polynesia on the Plains."

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Shop of curiosities with a dinosaur museum tucked in its basement.

A giant lumpy candle serves as a beacon for this highly scented pit stop.

A black cottonwood gets a second life as a home for books.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

When in Idaho, sleep in a giant potato.

Piled high inside this warehouse and coffee shop are salvaged goods that span every corner of the globe.

One of the smallest towns in the United States.

Chef Lawrence West serves up Indian tacos, wojapi, and other Lakota dishes at the brick-and-mortar incarnation of his popular food truck.