Lists of the world's tallest towers are available at SkyscraperCenter.com and InfoPlease.com. An additional list with information on the tallest buildings and structures in the world is available on Wikipedia.org.
As of 2015, the tallest tower in the world is the Burj Khalifa in Dubai, UAE. Standing 2,722 feet tall, the Burj Khalifa has held the record since its opening in 2010. Other structures that are among the tallest in the world include the Tokyo Skytree, a broadcasting and observation tower that stands 2,080 feet, as well as the Shanghai Tower that is 2,073 feet tall and the Abraj Al-Bait Clock Tower that is 1,972 feet.