One of London's lost rivers runs through a pipe over the tracks of this subway station.

The first regular high-definition TV transmissions were made from this seemingly out-of-place mast located on one corner of a Victorian-era entertainment venue.

A museum dedicated to one of Portugal's most celebrated writers.

This tile-work piece featuring a chicken riding in carriage is both a remarkable artistic creation and a social commentary of politics and culture in 17th-century Portugal.

A unique seaside cave where Aleister Crowley faked his own death.

An unassuming music museum recounts the rags to riches story of a dramatic Portuguese genre.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

In 1977, an eccentric book lover formed a micronation for book lovers.

Estimated to be more than 5,000 years old, this yew may be Britain’s oldest.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

This tall stone wall with no door and ill-matched windows was built centuries ago, and used as a shelter for domesticated pigeons.

The seaside ruins of an ancient salt production facility.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Preserved behind glass, the ruins of a medieval building used to store human remains.

This monumental intersection commemorates the day Okinawa switched to driving on the left.

The former site of Fukuoka’s legendary ramen joint works hard to guide customers to the “original” original.

In the oldest zen temple stands a descendant of the very tree that introduced tea to Japanese culture.

This is no ordinary coffee chain outlet—it's an architectural masterpiece.

The seat of the lost Ryukyu Kingdom has survived numerous fires and wars over the centuries.

The giant figure on the back of this turtle-shaped temple actually hides a memorial pendulum.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

The largest volcanic caldera in Japan holds an entire city in its maw.