This ancient hydrological marvel is now the base of a modern outdoor cinema.

One of the best collections of Byzantine art housed in a magnificent, 19th-century neoclassical home.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

Savor sheep milk yogurt at the last of Athens' dairy bars.

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Twisted buildings adorn the banks of the Rhine river.

This futuristic German television spire is actually the world's largest digital clock.

Fortified medieval tower house with lovely roof garden.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Visit an imposing 13th-century Transylvanian citadel lurking not far from the region's more heavily touristed attractions.

An old spa town in the mountains of Romania where, according to legend, the great hero Hercules once bathed.

A collection of items from a way of life that no longer exists.

In the middle of a Brussels roundabout, a cargo container balancing on its edge.

Belgium's national heroine turned spy sacrificed her life to combat German occupation.

This huge limestone slab is considered the largest paving stone in Belgium and a relic of the earliest modern paving in Brussels.

Known as "The Spewer," this bizarre fountain has an even stranger urban legend behind it.

This non-profit theatre in the heart of Brussels is dedicated to hosting independent films.

A gruesome combat between a hunter and a furious momma bear.

Offal and flawless onion soup are on the menu at this restaurant that once catered to the workers of Les Halles.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

The design of this beautifully crafted building was inspired by Norwegian glaciers.