With no menu and no sign, this 130-year-old taverna doles out affordable home cooking.

This Funeral Hearse Museum represents the finest in cadaver transportation.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

The monster at the center of the Darwin Center Spirit Collection.

This hidden green space is the city's second largest conservatory.

This 1920s Dutch barge is now a floating bookstore.

Repository for more than 22 million pickled specimens.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Catacombs turned marketplace.

The anatomical-pathological collection of a man who changed surgery.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Eighty million natural history specimens call this gargantuan museum home.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Banksy gives themself artistic license with this piece of London street art.

This museum houses an imposing skeleton army comprised of creatures great and small.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Abandoned railway line circling the city of Paris.