Today, the Tokyo Skytree (東京スカイツリ) in Sumida, Tokyo, opened to the public. Clocking in at 634 meters or 2,080 feet, the Skytree is the tallest tower and the second largest structure in the world. Over 8,000 visitors took high-speed elevators up to the observation deck today to celebrate. Some waited in line for more than a week to get tickets for the opening.
Note: Towers are self-supporting and meant for regular, but not living access by humans. Continuously habitable skyscrapers and buildings like the Burj Khalifa, the tallest structure in the world, do not qualify as towers.