A model train wonderland hidden beneath Gare de l'Est station.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

These cinderblock farmhouses were actually World War II radar stations in disguise.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

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

Historical trolley restoration and operation at History San Jose, Kelly Park.

Three plaques mark the spot where the "forgotten father of broadcasting" worked.

At night, this glittering musical tunnel draws skaters and photographers.

Under the shadow of its towering parent tree, a rare specimen of sequoia produces ghostly white leaves.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

Part mural and part sculpture, this work of art sits in the middle of the Promenade, as if swimming in a river of asphalt towards the ocean.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

A breathtaking 19th-century trail overlooks Lake Tahoe.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

This colossal underground passage paved the way for large-scale drainage and access tunnels across the U.S., but it almost wasn’t built.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

Step into a pastel time capsule where candy is truly dandy.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

According to local legend, a tree grew from the stake that killed this alleged vampire. In reality, he probably died from influenza.

Former home to Polish artist Tamara de Lempicka's dazzling Art Deco duplex studio.