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

This French Canadian classic is a specialty of the oldest continually used church in Minneapolis.

These aggressively sustainable art homes look like something out of 1970's science fiction.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

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

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A crumbling hospital from the 1850s on Roosevelt Island.

World's largest collection of serial killer artwork and other macabre exhibits.

Eulogizing an unknown man's unusual demise.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A mysterious echo seems to defy the laws of acoustics.

All that remains of the once-booming chain is a single orange-roofed restaurant.

This sweet Southern elixir comes from what may be the oldest grape vine in North America.

Two gems of Beaux Arts architecture that have been sitting vacant for years.

Prehistoric animals decorate this popular outdoor park.

A local scoured more than 1,000 acres for stone to create his masterpiece.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

Enormous lake at the bottom of a unique cave system.

The secret city built by the Manhattan Project.