This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

Famously misunderstood wonder of the ancient world

Eighty million natural history specimens call this gargantuan museum home.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The modern birthplace of Irish freedom.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A floating cat sanctuary on an Amsterdam canal.

Gargoyle head that brings good luck.

This unlikely memorial honors the Canadian and Portuguese laborers who felled trees for the Allies in World War I.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

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

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Pilgrimage site for star-crossed lovers.

Fantastic views and thousands of love locks.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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