One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

The world's oldest bookshop still in operation.

Mummies preserved naturally for seven centuries.

Beirut's thinnest building was the result of feuding brothers.

The world's largest reflecting pool is just two centimeters deep.

An early 20th-century bullring converted into a modern shopping center.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

The first mosque in the world to receive electricity.

Oriental bazaar in the heart of Sarajevo.

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

This historic cemetery was inaccessible for several years due to dozens of land mines.

A war-torn Olympic relic is being overtaken by graffiti and nature.

This colorful statue welcomes visitors to a Barcelona park.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

A beautiful but deteriorating monument of Soviet architecture.

Ruins of a former government building destroyed during the Georgian-Abkhaz war in the wake of the fall of the Soviet Union.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Despite finally receiving electricity in 1970, this tiny town is now deserted.