Grand Central Terminal, New York. _ This is one of the world's most visited tourist attractions, with 21.9 million visitors in 2013. With 44 platforms, it has more than any other railroad station in the world. _ The main concourse is a monumental space that inspires awe - 275 ft (84 m) long by 120 ft (37 m) wide by 125 ft (38 m) high. _ Did you know: the terminal is made primarily from granite. In fact, so much granite is used that the building emits relatively high levels of radiation on a regular basis. _ #amazingplacestovisit #newyorkcity

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