Once housing children next to hardened criminals this historic jail once displayed Ned Kelly's skull until it was stolen.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This Costa Rican chapel is the most metal church in the world, literally.

Cryptid lake monster honored with its own monument.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The site of Paul Revere's historic two lantern warning.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

A 60-room castle constructed by a horse-racing heir.

Unicorns, elephants, and bears, oh my!

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Discovered by cows, these upstate New York show caves are presented with a healthy dose of psychedelic folk art.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Holding the most bodies of any cemetery in the United States.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

The site of a tragic massacre that spawned a multimedia franchise.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The drama of nature in full effect in this Nevada State Park.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The largest island on the great salt lake is home to curious creatures and strange stories.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.