This subterranean spot might be the epitome of Japan's baroque, retro coffee houses.

Only the face remains of this giant Buddha statue, which is said to be a source of luck for students.

A Buddhist temple to honor insects that died for science.

This site commemorates the life of a Japanese scientist who dedicated his life to the discovery of diseases.

A Buddhist temple on an artificial island that houses a monument to the fugu fish.

A striking symbol of the Bulgarian capital.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

The cellar of a former factory is now home to a collection of gloves, machines, and tools of the trade.

A water reservoir disguised as a castle stands atop a hill in a park in Stockholm city.

This building, previously used as a courthouse, has an unusual geological feature in its basement.

A statue that stood at the center of a long copyright battle.

A concrete mushroom that divided Stockholm residents for nearly a century.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

A wooden street sign is the last remnant of this 400-year-old alleyway.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

This enormous abstract sculpture is part jungle gym, part elaborate noise-making machine.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

Oriental bazaar in the heart of Sarajevo.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Monasteries on rock pillars, once accessible only by frayed ropes.