In the 1960s the campus expanded greatly and several new buildings were constructed, mainly in the International Style, with orange brick facades. Since then the University has bought nearly all the remaining buildings within the campus perimeter, and has adaptively reused many of them for academic and residential purposes; some of the more notable include the Rush Building, a former hospital that now houses the Drexel University College of Computing and Informatics and the Paul Peck Alumni Center, a former bank designed by Frank Furness. The university has since built another wave of new buildings, primarily in the Modern and Postmodern styles, with metal and glass facades.