This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

A NATO bombing took the lives of 16 civilians in 1999—the ruins remain in the center of Belgrade.

Memorial to the 89 children killed during the NATO bombing of Serbia.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

Structure built from the skulls of vanquished foes.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

These warring psychedelic crags commemorate an unsuccessful military operation.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

The oldest botanical garden in the world that technically isn't the oldest.

One of the largest squares in Europe contains an entire artificial island.

A small villa said to have inspired the design of the court jester at the heart of Giuseppe Verdi's 1851 opera.

A medieval tower with a suspended iron cage used as an open-air jail for criminals who were exposed as a warning.

It took more than 300 years to build this church, which is home to two sacred vessels believed to hold the blood of Christ.

An architectural oddity where the triglyphs of the courtyard of walls create an optical illusion.

A room filled with frescos that make it seem like the walls are crumbling down while giants die in despair.

An ode to the washerwomen who called Pavia home.