Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Folklore and history carved into Brittany's coast.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The highest point in Belgium is a staircase to nowhere.

A beautiful maze marks where three countries meet.

Go surfing on this urban wave, "hacked" by local surfers.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

A park where the Inn and Ilz rivers join the Danube as it slinks off into Austria.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A Spanish town built into the cliffs.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The world's largest wooden structure.

These megalithic tombs contain some of the largest stones ever moved in prehistory.

Rare karst landscape eroded from a flat seabed.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

One of Malta’s most important Neolithic sites sits in a suburban area south of the country’s capital.

Eighty million natural history specimens call this gargantuan museum home.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

No need to strap in for a “ride” on this walkable roller coaster.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.