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

A tiny chapel and burial site lurk underground in Jajce.

A historical puzzle lies at the origins of this structure.

A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

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

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.

This elegant monument to those who fought against fascism is inspired by the shape of the poppy flower.

One of Bogdan Bogdanović's first spomeniks honors those who died during the People's Liberation Struggle in Macedonia.

These dilapidated planes are now a canvas for graffiti artists.

It's unclear what caused the fire that led to this opulent hotel's demise.

St. John the Baptist's forearm is housed in this remote 11th-century monastery.

Depending on the region's rainfall, this church may be partially submerged.

Artists made this mosque into a marvel of Ottoman baroque architecture.

The largest and best-preserved rotunda in Prague.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A historic and beautiful Art Nouveau chamber in a historic railway station.

The memorial stands at the intersection of the rivers Morava and Danube.

Brass plaques embedded in pavement preserve the memories of those who lost their lives at the hands of Nazis during World War II.

Dedicated to a synagogue that was destroyed after having survived World War II.

No one knows the origin of this creepy little stone man with an oversized phallus.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

An ode to a soldier who came to town, fell in love, then began making his own sparkling wine.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.