Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

The modern birthplace of Irish freedom.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A contemporary art installation housed within a Gothic cathedral.

A fascinating insight into daily life in the Eastern Bloc.

A restaurant and observation deck built in a unique broadcasting antenna.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

Pompeii's less famous neighbor is still revealing her secrets.

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

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Go inside to really appreciate this 500-year-old technological masterpiece.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Regency-era excess on the English Coast.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

A battle between nature and architecture in the Cambodian jungle.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.