According to The Skyscraper Page, 15 of the 25 tallest high-rises in the world were completed in 2010 or later. 20 of those 25 are in Asia, including 12 in China. The current 25th-tallest building in the world was the famous #1 tallest building for several decades: it's the Empire State Building. You probably know that in NYC, One World Trade Center is taller than the Empire State Building. You may not have known that the Empire State Building is no longer #2 in NYC: earlier, this year, the new #2, 432 Park Avenue, was completed. At 1396 feet, it's the 14th-tallest skyscraper in the world. If all goes according to schedule, in 2018, 111 West 57th St will be the new 2nd-tallest skyscraper in NYC at 1438 feet, until 2019, when Central Park Tower, 1550 feet tall, is scheduled to be completed. Also in 2019, 30 Hudson Yards, 1296 feet tall, is scheduled to bump the former world #1 Empire State Building down to #6 in NYC.
But of course, NYC, which Kurt Vonnegut so aptly called "Skyscraper National Park," is, although not exactly shabby, to be sure, no longer the home of the world's most spectacular skyscrapers. One World Trade Center, 1776 feet tall, is currently the 4th-tallest skyscraper in the world, behind the Burj Khalifa at 2717 feet, Shanghai Tower at 2074 and the Mecca Clock Royal hotel at 1972. When all of the skyscrapers currently under construction are completed, One World Trade Center will have been bumped from the 4th highest in the world to the 13th, and the Burj Khalifa will fall from #1 to #4. In 2019 -- if all goes as planned -- the new #1 in 2019 will be Kingdom Tower in Jeddah, Saudi Arabia, 3281 feet tall.