This dazzling Art Nouveau mansion is now home to the Modern Art Gallery Subotica.

A maze of underground tunnels beneath one of the most beautiful forts in Serbia.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

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

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

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

This historic pub has maintained much of its 1906 decor, including a small sequestered room for women, where orders were slipped through a tiny window.

A lover's walk between hilltop towns, decorated with graffiti love notes.

Five candy-colored villages on the Italian Riviera.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Originally a leper colony, the island is now an Armenian monastery that's home to an incredible manuscript library and eclectic museum.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Venice's "Island of the Mad."

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

The Guardian of Tallinn.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

The oldest continuously operating pharmacy in Europe.

Spend your honeymoon where the Devil had his wedding.