This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

Ship-sized kinetic sculptural fantasy.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A hands-off space for graffiti artists to hone and display their skills.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The Tudor-style cottage in the middle of the square is not quite what it seems.

A Spanish Colonial fort now houses an archeology museum.

Village situated on a narrow volcanic escarpment.

Wonderland replication in progress by one persistent man.

Of course Salvador Dalí lived in a castle...

Kissing the ass of this stone lioness has become a rite of passage in the city of Girona.

Designed by Gustave Eiffel before his famed tower.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

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

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

This colorful statue welcomes visitors to a Barcelona park.

An early 20th-century bullring converted into a modern shopping center.