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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A centuries-old house, once part of the wall of Granada, sports musket barrels from the battlements which allude to its original owner.

Art and a pun, all in one.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Started as a kitchen garden, now the second largest botanical garden in the world.

A slice of central Asia in the middle of Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

An eerie, derelict amusement park in Berlin.

The oldest operating pharmacy in the world features 800-year-old recipes.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This camera store in Milan holds one of Europe’s largest collections of luxury-antique cameras.

Pilgrimage site for star-crossed lovers.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.