(AP) — A Tokyo developer took visitors up the world's tallest freestanding broadcast structure on Tuesday, a 634-meter (2,080-foot) tower with special technology meant to withstand earthquakes that often strike Japan.
The Tokyo Skytree is the world's second-tallest structure behind the 828-meter (2,717-foot) Burj Khalifa in Dubai, according to owner Tobu Tower Skytree Co.
The needle-like radio and television tower opens to the public on May 22.
Journalists given a tour Tuesday saw sweeping if hazy views of the Tokyo skyline.
It took about 50 seconds in a high-speed elevator Tuesday to zip up to the lower observation deck at 350 meters (1,148 feet), and another 30 seconds to reach the higher deck at 450 meters (1,476 feet).
The Skytree has a restaurant and two cafes on the observation decks, a vertigo-inducing glass floor that allows visitors to look straight down, and an emergency staircase with 2,523 steps.
The tower was constructed with extremely strong steel tubes surrounding a central concrete column that are structurally separate from each other in the tower's mid-section. In the event of an earthquake, the concrete core and steel frame are designed to offset each other to reduce the building's overall motion.more & pics