Dome

Top of the tower with tilted windows and overhang to shield from sun glare; guy wires in X configuration anchor tower to base; In 1996, a $29 million, 277-foot-tall (84 m) air traffic control tower was built near the Theme Building. (To the east of the old 1960s tower which still exists, and is used for offices.) The windows, tilted outward to avoid glare, circle the entire top floor to allow a clear view for air traffic controllers. Holmes & Narver, a subsidiary of Ashland Oil since 1981, is a major government contractor, as a construction and engineering firm. The control tower also contains an array of equipment such as radios, radar displays, computer systems for meteorological information and flight data, controllers' headsets, telephone systems, light guns for communication with aircraft via aviation light signals, and wind and pressure gauges. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 8/31/2015)