Designed by a computer, this intricate network of fluorescent green pipes has taken over a subway station.

The remains of the vast manor that once belonged to Lord Kira, villain in the 47 Ronin story, is now a shrine dedicated to the incident.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

The best place for scenic views of the DMZ and North Korea.

Secret North Korean passage discovered below the world's most dangerous border.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

Plenty of old carney magic still haunts this photogenic amusement park.

Buy your fish and have it cooked to order in this bustling, eight-floor seafood market.

Home to more than 13,000 pieces of war memorabilia and military equipment.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This little-known national museum houses over 40,000 works of art from across the world.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

The best place in the world to buy tinned fish.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

You'll find just about anything in this funky Tbilisi flea market.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

A 1920s home transformed into an immersive art experience, where every room is a portal to another realm.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A free, public museum dedicated to the fascinating science of sight.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.