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Night view of the Opera House and new business quarter, Oslo, Norway.

These 8 Buildings Will Make You See Norway in a New Light

Johann Wolfgang von Goethe's House, Weimar,Germany; photocrom print published between 1890-1900.

5 Historically Significant Houses in Germany

The New Museum of Contemporary Art in New York City, designed by the Japanese architecture firm SANAA (Sejima and Nishizawa and Associates) and opened in 2007. Attached to the facade is Swiss artist Ugo Rondinone's sculpture installation Hell, Yes! (2001)

Woman-Made: 13 Architects You Might Not Know

Florence Baptistery of Saint John, Italy

9 Historic Buildings in Florence

Inside the Suleymaniye Mosque on may 25, 2013 in Istanbul, Turkey. The Suleymaniye Mosque is the largest mosque in the city, and one of the best-known sights of Istanbul.

8 Masterpieces of Islamic Architecture

Discover

US Marines firing at Fallujah, Iraq, during the Second Battle of Fallujah in November 2004. Operation Iraqi Freedom, Iraq War.

Timeline of the 2000s

Ethel Rosenberg arrested in August 1950. Photograph dated Aug. 8, 1950. American civilians executed for espionage. Spies, communists, Julius Rosenberg

Spies Like Us: 10 Famous Names in the Espionage Game

Periodical Cicada, Adult, Magicicada spp. Requires 17 years to complete development. Nymph splits its skin, and transforms into an adult. Feeds on sap of tree roots. Northern Illinois Brood. This brood is the largest emergence of cicadas anywhere

Why Do Some Cicadas Appear Only Every 17 Years?

Poker game. Card game. Royal Flush in poker. Hearts suit gambling

Poker Hands Ranked

Aurochs. Bos primigenius. Skeleton. Extinct animal. Skeleton of an Aurochs, an extinct wild ox.

6 Animals We Ate Into Extinction

Aspirin pills.

7 Drugs that Changed the World

Drinking water is poured into a glass.

Water Fluoridation: Just the Facts

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Hagia Sophia. Istanbul, Turkey. Constantinople. Church of the Holy Wisdom. Church of the Divine Wisdom. Mosque.

Architecture: The Built World