A silly medieval mural preserved on the side of a Viennese house.

The solemn exterior conceals an opulent interior of this 17th century church.

These relics of the city's past now exist as a prominent modern feature.

An exquisite Baroque church in Vienna's old town.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

An old slaughterhouse now holds the largest collection of pig artifacts.

A funerary monument for two brothers who served in the Roman cavalry.

Inside this discotheque resides a unique memorial dedicated to one club-goers favorite pet.

In 1914, Archduke Franz Ferdinand spent his final night alive at this luxurious hotel.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

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

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

This ironic war memorial thumbs its nose at a campaign of inedible humanitarian aid food products.

Some of the best-preserved specimens of the monumental medieval tombstones found throughout Bosnia and Herzegovina.

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

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.

This unique museum focuses on the Siege of Sarajevo through children's eyes.

A monument on the pavement marks the spot where two cultures that shaped Sarajevo come together.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

The first mosque in the world to receive electricity.

The place where World War I began.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

Oriental bazaar in the heart of Sarajevo.