Big Apple
Although the history of "Big Apple " was once thought a mystery, a clearer picture of the term's history has emerged due to the work of amateur etymologist Barry Popik, and Gerald Cohen of Missouri University of Science and Technology. A number of false theories had previously existed, including a claim that the term derived from a woman named Eve who ran a brothel in the city. This was subsequently exposed as a hoax.
Architecture of New York City
New York has two main concentrations of high-rise buildings: Midtown Manhattan and Lower Manhattan, each with its own uniquely recognizable skyline. Midtown Manhattan, the largest central business district in the world, is home to such notable buildings as the Empire State Building, the Chrysler Building, Citigroup Center and Rockefeller Center. Lower Manhattan comprises the third largest central business district in the United States (after Midtown and Chicago's Loop). Lower Manhattan was characterized by the omnipresence of the Twin Towers of the World Trade Center from its completion in 1973 until its destruction in the September 11 attacks, 2001.