History's most infamous unfinished buildings

Alai Minar, Delhi, India: Set near the famous Qutub Minar of Delhi is the lesser-known circular monument known as Alai Minar.

Rashid Karameh International Exhibition Center, Tripoli, Lebanon: Designed by no less than famed Brazilian architect Oscar Niemeyer.

Germania, Berlin, Germany: The idea of Germania was Hitler's renewal of Berlin.

Centro Financiero Confinanzas, Caracas, Venezuela: Also known as Torre de David in honor of the project's main investor, the now deceased David Brillembourg.

Metropolitan Museum of Art, New York City, USA: One of the world's most celebrated museums appears complete.

National Monument of Scotland, Edinburgh, Scotland: Conceived as a memorial to the Scottish soldiers and sailors who died fighting in the Napoleonic Wars.

Siena Cathedral, Siena, Italy: Siena's majestic cathedral is missing the proposed extension of its nave.

Ryugyong Hotel, Pyongyang, North Korea: Construction began in 1987 on the Ryugyong Hotel.

Palace of the Soviets, Moscow, Russia: Designed in the early 1930s at the height of Stalin's rule.

Sagrada Família, Barcelona, Spain: Construction on Sagrada Família began in 1882.

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