A church of bones, decorated with 40,000 human skeletons.

An ancient knight and a symbol of the city's freedom.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

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

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

An apparition of Virgin Mary in Herzegovina.

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Oriental bazaar in the heart of Sarajevo.

This brutalist monument is inscribed with 9921 names of Yugoslav partisans who perished during WWII.

The place where World War I began.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

A little sculpture with a large wardrobe.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

Annual technopop celebration of peace and love.

Vienna's underworld of tunnels and subterranean rivers made an iconic appearance in a 1949 Orson Welles film.

Narrow-gauge railway with its own personal power grid.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

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

A pyramid in Central Europe of unknown origin.

The world's most important buildings shrunk to a tiny size.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.