List of tallest buildings
The international non-profit organization Council on Tall Buildings and Urban Habitat (CTBUH) was formed in 1969 and announces the title of "The World's Tallest Building" and sets the standards by which buildings are measured. It maintains a list of the 100 tallest completed buildings in the world. The organization currently ranks Burj Khalifa in Dubai as the tallest at . The CTBUH only recognizes buildings that are complete however, and some buildings included within the lists in this article are not considered finished by the CTBUH.
432 Park Avenue
432 Park Avenue officially topped out on October 10, 2014, at making it the second-tallest building in New York City after One World Trade Center and the fifteenth-tallest building in the world. Because much of One World Trade Center's height is in its spire and its base is nearly lower, the rooftop of 432 Park Ave is, , the highest in the city. It surpassed 311 South Wacker as the tallest building in the world known only by its street address.