Trump announced in 2001 that the skyscraper would become the tallest building in the world, but after the September 11 attacks that same year, he scaled back the building's plans, and its design underwent several revisions. When topped out in 2009, it became the second-tallest building in the Western Hemisphere, after another Chicago building, the Willis Tower (formerly known as the Sears Tower). Trump Tower Chicago surpassed the city's John Hancock Center as the building with the highest residence (apartment or condo) in the world, and held this title until the completion of the Burj Khalifa. As of October 2014 it is the 16th tallest building in the world and fourth-tallest in the United States.
The design of the building includes, from the ground up, retail space, a parking garage, a hotel and condominiums. The 339-room hotel opened for business with limited accommodations and services on January 30, 2008. April 28 of that year marked the grand opening with full accommodation and services. A restaurant on the 16th floor, named Sixteen, opened in early 2008 to favorable reviews. The building topped out in late 2008 and construction was completed in 2009. As of 2013, the hotel is one of three in Chicago with an elite five-star rating and the building hosts a restaurant that is one of three in Chicago with a five-star rating, according to the Forbes Travel Guide.