The modern birthplace of Irish freedom.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

One of Ireland's most infamous prisons for rebels including men, women and children.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

A giant floating rubber duck-bunny painted with a different design every year.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

Four giant movable street lights decorate this modern Rotterdam square.

A huge teapot illuminates a home for the elderly.

A modern reimagining of a medieval city gate.

The Netherlands' first car tunnel has an unusually rectangular shape.

A strangely curved lamppost stands tall over this avenue in Rotterdam.

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

A dramatic art installation features a BMW flying out of a building in Rotterdam.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

A statue of the second-tallest Dutchman in history.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

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

A mocking tribute to the past and modern leadership of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Two stunning 17th-century libraries and a cabinet of curiosities.

Macabre astrological automaton clock dating to the late 1400s.

The palatial McDonald's that inspired Wesley Willis.