The first skyscraper to include a Ferris wheel built into the facade.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

A bizarre house filled with an astounding array of collections.

A catapult rock from Gotland’s 13th-century civil war is still lodged in Scandinavia's best-preserved medieval city wall.

This macabre monument atop an ancient well gives a nod to a brutal episode in Scottish clan history.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

A baffling beast so absurd a town councilman called it "intellectual vomit in technicolor."

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The home of an eccentric Edwardian gentleman is packed to the rafters with handcrafted items collected over a lifetime.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

This hulking behemoth is actually five interconnected towers built in the 1960s.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

A wacky, UFO-shaped house in a suburban neighborhood.

Hidden in the hills is a mysterious stone structure, known only to a few.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This mysterious pig iron pillar does not rust, despite being weathered by the elements for centuries.

The great Danube river starts here.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.