A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

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

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.

The final resting place of the great navigator, or maybe his brother.

These wooden balconies that are both decorative and functional.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

A sign marks where the two bodies of water meet.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

This legendary urban waterfall creates a dazzling display of rainbows.

Considered by many to be one of the most dangerous highways in Alaska.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

A growing popular hipster market with over 100 local specialties and live music.

Mongolian Buddhists believe this monastery in the Gobi desert to be the center of the world's spiritual energy.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

An iconic Soviet statue of working-class people.

A solemn, monumental, kitschy palace of worship honoring victory in the Great Patriotic War.

Stalinist skyscraper built with help of cryotechnology.

Gargantuan home of Russian science.

One of the last examples of Soviet architectural propaganda has a few technological tricks up its sleeve.

This frozen-in-time summer home outside Moscow provides a look at Russian life in the 1950s.