One World Trade Center, also known as 1 World Trade Center, One WTC, and 1 WTC, and nicknamed the Freedom Tower, is 104-story, 1,776-foot skyscraper in Lower Manhattan, completed in 2009. It is the main building of the World Trade Center complex in the Financial District, built to replace the twin towers destroyed in the September 11, 2001 terrorist attacks. As of September 2015, it was the tallest building in the United States and the fourth-tallest building in the world. The Port Authority of New York and New Jersey developed it with the Durst Organization, a New York-based family-run real estate development company. Durst owns a minority stake in the building. Conde Nast, the publisher of Vogue and The New Yorker, became an anchor tenant when it moved into a 1,000,000-square-feet space at 1WTC. The companys relocation from Time Square placed it in the avant-garde of other media houses migrating to Lower Manhattan. However, the lofty symbolism jarred with the reality that the building has had trouble attracting other tenants without cutting rental prices and was populated by rodents when it first opened. -WP