David Fixler, FAIA, FAPT, is an architect and lecturer in Architecture, Urban Planning and Design at the Harvard University Graduate School of Design, with a focus on conservation. A graduate of Tufts and Columbia Universities, he has a distinguished record working with historic buildings and precincts for government, cultural and higher education clients. He is an internationally recognized leader in working with 20th century heritage, and his projects include the renewal of the United Nations Headquarters in New York, and other works of Modern masters including Alvar Aalto, Louis Kahn and Eero Saarinen. David’s practice increasingly seeks sustainable conservation strategies to repurpose underutilized buildings to further social and environmental equity. A frequent writer and global lecturer on architecture, planning and preservation, David has had his design and written work published internationally in a wide variety of popular, trade and scholarly books and journals. Mr. Fixler is a Fellow of the American Institute of Architects (AIA) and the Association for Preservation Technology International (APTI), Design Excellence Peer Review Architect for Historic Preservation for the United States General Services Administration (GSA), co-founder and past president of Docomomo US/New England, past United States representative on the Docomomo International Scientific Committee (ISC) for Registers, co-founder and former co-chair of the APTI Technical Committee on Modern Heritage, and a former chair of the Heritage Conservation Committee of the Society of Architectural Historians (SAH).