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

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

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

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

Bridge that died in war and was resurected.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

The remains of a sunken military ship wreck visible through clear water.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

Longest fortress system anywhere in Europe.

Gargoyle head that brings good luck.

A musical instrument played by the sea.

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

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

Atop this former dutch railway office sits an interstellar work of art.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

According to legend, this small island was home to one of the sirens met by Ulysses in the Odyssey.