Mobsters came for a soak in the hot springs, and stayed for the illegal gambling and bootlegging.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

In a largely deserted ghost town, a little brick building recalls its history as a gold rush hub and haven for outlaws.

The origin of these small islands' sweet names is a local mystery.

A gothic-styled structure that has been the location for several movies.

A simple Colonial home with a past haunted by death and madness.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

Rumors of the occult haunt this upscale 1920s hotel.

Final resting place of one of the classic authors of horror literature.

This giant mimetic milk bottle has encouraged Route 66 travelers to choose dairy since 1948.

Savor the famous tempura-fried pork tenderloin sandwich at this long-standing Kansas City food counter.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

The secret city built by the Manhattan Project.

On October 26, 1963, a 12-kiloton nuclear device was detonated here in granite some 1,211 feet below the ground surface.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

This historic old movie house was the scene of one of the Blob's most iconic attacks.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

Deep into the lower floors of Pike Place, find a date with fowl fate.

World's smallest skyscraper, the product of a remarkable con.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.