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
Glenbard West High School style of a castle, complete with roof turrets. Glenbard, as it was originally named, was constructed in 1922 atop Honeysuckle Hill, overlooking Lake Ellyn. Built with dark red brick, the building was built with castle-like design, complete with a turret and other minor castle details. Glenbard West also has a tower known as the sixth floor. From the window of the sixth floor tower, the Willis (formerly Sears) Tower in downtown Chicago can be seen on a clear day. Athletics were initially played in a gymnasium, built in 1936, in the school building itself, but with the construction of a