Once the most densely populated place in the world, this island is now a ghost town.

An eerie reminder to the horrors of World War II.

This Japanese national treasure was originally built in 593.

Peace Park and the Atomic Bomb Dome.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

An enormous pair of straw sandals woven in the traditional way—to keep demons at bay.

Rows of stone statues are dressed up to mourn children that are lost before birth.

Starship-temple contains 400 tons of drinking water and offers free Japanese lessons.

Once a black market electronics marketplace, now an otaku shopper's paradise.

The original "capsule building" is a masterpiece of Metabolist architecture.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Apartment complexes built into huge repurposed natural gas tanks.

Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

Op-art architecture designed for happiness.

This small exhibition displays equipment and artifacts once belonging to the feared Stasi secret police.

Model Trains and Much More in Hamburg.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

A museum dedicated to a Cold War era sausage.