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London Post Office Railway

The Post Office Railway, known as Mail Rail since 1987, is a driverless underground railway that was built to move mail between sorting offices.

Alert: The Most Northern Settlement In The World

Located just over eight hundred kilometers away from the North Pole, the community of Alert, on the northeastern tip of Ellesmere Island, in Nunavut, Canada, is the most northerly permanent settlement in the world.

The Crypt of Civilization

Under the foundation of Phoebe Hearst Memorial Hall at Oglethorpe University in Georgia, the United States, is a large room, that was sealed shut with a welded stainless steel door more than seventy five years ago.

Mar Sem Fim

Mar Sem Fim (“Endless Sea” in English) is a Brazilian yacht that was shipwrecked, sunk and subsequently got frozen in ice in Maxwell Bay of Ardley Cove, Antarctica.