An acoustic anomaly with a mysterious cause.

Jule Körner's house full of bizarre architectural details.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

One person's lost luggage is another person's treasure.

This structure among the trees was the result of divine inspiration.

These early tent-shaped grave coverings are unique to Appalachia.

This award-winning men's bathroom was just too beautiful to not allow women to see.

This replica of the Greek structure is in the heart of Nashville.

A large instrument played by the wind.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A strange house built only at night, with rumored mystic inspiration.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

This odd California folly seems like it was almost designed to accumulate urban legends.

The world's most famous donkey lives in this pen.

The rest of him lived another 61 years and was buried elsewhere.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A giant chess set, minus the psychedelic drug trip.

The largest permanent Monopoly board makes one of the longest games even bigger.