 New buildings and major renovations are required to meet LEED Silver criteria, and the campus was nominated for the District Sustainability People's Choice Award in 2018.Healy Hall, designed by Paul J. Pelz in Neo-Medieval style and built from 1877 to 1879, is the architectural gem of Georgetown's campus, and is a National Historic Landmark.Within Healy Hall are a number of notable rooms including Gaston Hall, Riggs Library, and the Bioethics Library Hirst Reading Room.