This will be changing soon, but Taipei 101 has been the tallest building since 2004. I went there the other day. I haven't gone all the way up yet. I definitely want to do that soon. It is 1,670 ft tall, built in 2004. But, it won't be the tallest for long. Burj Dubai is catching up. It's under construction but is already taller than Taipei 101 at 2,684 ft. So, 101 will have a few more months to enjoy its superlative — Burj Dubai should be done in September.