This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

The centuries-old crosses "growing" in the cemetery are steeped in local lore and are believed to have healing powers.

A decommissioned Soviet airplane has been used as a movie theater and a cultural center.

The apartment building where JFK's assassin lived after defecting to the Soviet Union.

This unusual elevator doesn’t stop or slow down.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A subterranean shelter remains intact under a busy Paris railway station.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

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

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

A quirky house created entirely out of glass bottles combines a collector's spirit with an artist's flair.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.