Chicago Many other architects have left their impression on the Chicago skyline such as Daniel Burnham, Louis Sullivan, Charles B. Atwood, John Root, and Helmut Jahn. The Merchandise Mart, once first on the list of largest buildings in the world, currently listed as 44th-largest (), had its own zip code until 2008, and stands near the junction of the North and South branches of the Chicago River. Presently, the four tallest buildings in the city are Willis Tower (formerly the Sears Tower, also a building with its own zip code), Trump International Hotel and Tower, the Aon Center (previously the Standard
Wachovia Tower (Baltimore) Tower rises from the site formerly occupied by the Calvert Building and 7-9 Saint Paul Street. The building, formerly housing offices for Wachovia, is now home to the regional office of Wells Fargo and Company. Wachovia Tower (Baltimore) The Wells Fargo Tower, formerly known as the First Union Signet Tower, Wachovia Tower, and Union Trust Building, is a commercial high-rise in Baltimore, Maryland. The building rises 24 floors above street level and is in height; it is tied with Charles Center South as the 17th-tallest building in the city. The structure was completed in 1985. The Wells Fargo Tower was