A little sculpture with a large wardrobe.

The world's oldest known salt mine.

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

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The topiary maze at the Habsburg hunting lodge.

A restaurant and observation deck built in a unique broadcasting antenna.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Mountain where Jesus was first tempted by the Devil.

A beautiful but toxic fountain of mercury.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A perilous medieval road leading right into the sea.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

Legend says this sacred tree was a gift from goddess Athena.

The ruined doorway is a portal to the building's turbulent and torturous past.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

Where commuters walk through remnants of an ancient Greek necropolis.

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.

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