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The tower structures of the Tokyo Sky Tree are seen through the top window of the elevator on the way to the 450-meter (1,476 feet)-high observation deck during a press preview in Tokyo Tuesday, April 17, 2012. The world's tallest freestanding broadcast structure that stands 634-meter (2,080 feet) will open to the public in May. (AP Photo/Itsuo Inouye)

World's tallest tower opens in Tokyo

The world's tallest tower and Japan's biggest new landmark, the Tokyo Skytree, opened to the public on May 22.