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

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.

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

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

An interactive exhibition space dedicated to the kinetic sculptures of Swiss artist Jean Tinguely.

This artistic fountain display pays homage to this area's theatrical history.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

A unique seaside cave where Aleister Crowley faked his own death.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Houses are tucked between, on, and underneath giant boulders.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

A surreal statue honoring Prague's favorite literary son.

Monument to a suicide protesting the Soviet invasion.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

This Scottish graveyard is the final resting place of the man who inspired the character Ebenezer Scrooge.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.