The tallest buildings in Kentucky are located in Downtown Louisville and include 400 West Market designed by John Burgee, National City Tower designed by Harrison & Abramovitz, PNC Plaza designed by Welton Becket, and the Humana Building designed by Michael Graves. Of the 16 buildings in Kentucky over 300 feet (91 m), 12 are in Downtown Louisville. In addition, it is the center of local and regional government.