This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Legend has it this 11th-century castle was paid a visit from the devil.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

A tiny, forgotten park of surrealist sculptures in Angouleme.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

Exquisite carvings of leaves, Green Men, and the occasional dragon adorn a medieval chapter house.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

This cemetery features modernist statues as strange as its name.

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

A stately palace has been converted into the world's largest cannabis museum.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.