This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

A surreal statue honoring Prague's favorite literary son.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

Breathtaking Byzantine paintings cover the inside of this 12th-century church.

An ancient necropolis of magnificent tombs.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Gargoyle head that brings good luck.

A musical instrument played by the sea.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Sofia's legislative center is continuously reinventing itself.

A striking symbol of the Bulgarian capital.

A little sculpture with a large wardrobe.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

An exquisite Baroque church in Vienna's old town.

Double spiral staircases are not unheard of, but they are very rare.

Baroque celebration of the end of the Great Plague of Vienna.

The topiary maze at the Habsburg hunting lodge.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.