An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Week-long block party becomes a competition for the best decorated street.

The topiary maze at the Habsburg hunting lodge.

Crushed coral and crystals give the sand its signature coloration.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

Caves famous for the dragon-slaying saint who lived there.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The heads of two giant mythological water horses honor Scotland's horselord past.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Mountain where Jesus was first tempted by the Devil.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

The glowing blue Nymphaeum of Emperor Tiberius.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

An artistic tribute to the famous singer, just around the corner from where he was born.

This unreal Portuguese palace looks as though it's made from a pile of different castles.