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

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

This surreal memorial/cemetery is a necropolis of crumbling stonework and puzzle-shaped headstones.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

Bridge that died in war and was resurected.

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

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

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

A musical instrument played by the sea.

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

Island wonderland for communist autocrats.

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

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A six-ton wedding present for the King of the Scots.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

The most northern place on the mainland of Great Britain.

A sea cave with a waterfall and Viking past

Unusually, this ancient Iron Age broch has never been excavated.

This rare surviving broch is one of Scotland's most impressive Bronze Age structures.