A space-age tower, left, and a giant metal globe called the Unisphere, right, structures remaining from the 1964 World's Fair, looms above a passing LIRR train on Tuesday April 1, 2014 in the Queens borough of New York. As this month’s 50th anniversary of the 1964 New York World’s Fair approaches, a debate has emerged about what to do with some of the fair’s most famous structures. The towers topped by flying-saucer-like platforms, and a pavilion of pillars once called the “Tent of Tomorrow,” still sit as abandoned relics in the middle of Queens' Flushing Meadows Corona Park. (AP Photo/Bebeto Matthews)