A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

Wild West history in Hollywood style.

60 feet of towering steel balances gracefully.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

The commemorative stone column conceals a secret laboratory.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

A hotel and restaurant serving as the mecca of kitsch.

A museum, art project, and institution that demands we look at the world around us in a strange new way.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

A simple statue outside a California Amtrak station honors the overlooked contributions of the "silent spikes."

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

An alley covered with 20 years of bubble gum.

A Mysterious Masonic tomb in San Luis Obispo.

Known as the "Hobbit Houses," these storybook homes look like they're straight out of the Shire.

A giant donut stands as a popular symbol of Los Angeles iconography.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

A Masterpiece with a Tragic History.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This 1920s railway depot is now home to two unique museums complete with a miniature train ride.