This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

Oriental bazaar in the heart of Sarajevo.

The place where World War I began.

This one-time health resort was used by aristocrats around the world.

Trimmed trees grow alongside the graves like topiary tombstones.

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.

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

The Renaissance-era courthouse is a relic from the fortified town's centuries of Venetian rule.

Island wonderland for communist autocrats.

Now abandoned, the world's first torpedo factory is crumbling into the sea.

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

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

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.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This stunning concert hall has become a symbol of Iceland's national recovery.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

A sulfuric martian landscape that looks far better than it smells.