Charles A. Birnbaum (born 1961) is a nationally recognized advocate for the study of American landscapes. He is the President and CEO of The Cultural Landscape Foundation (TCLF) in Washington, DC. Education and early career Charles Alan Birnbaum graduated from the State University of New York College of Environmental Science and Forestry, receiving a Bachelor in Landscape Architecture in 1983. Before founding TCLF, Birnbaum spent fifteen years as the coordinator of the National Park Service Historic Landscape Initiative (HLI). In that position, he developed and helped implement the Secretary of the Interior's Standards for the Treatment of Historic Properties + Guidelines for the Treatment of Cultural Landscapes. His experience includes ten years of private practice in New York City with a focus on landscape and urban design. Advocacy and education Birnbaum is known for his advocacy to identify and protect significant landscapes threatened by erasure, neglect or alteration. He has led efforts to save more than 50 parks, landmarks and gardens through open dialogue and education. TCLF identifies at-risk properties each year as part of its Landslide initiative. "Sites can be at-risk for numerous reasons, ranging from an imminent threat of demolition to an accumulation of factors — storm damage, lack of resources for needed maintenance, vandalism, etc." Among the projects that Birnbaum and TCLF have recently flagged is the A. M. E. Zion Church in Rossville, Staten Island. Another way that Birnbaum achieves consensus is through workshops where Birnbaum gathers members of the landscape community and the public together to discuss the interaction of the natural and the built environment. His first "Bridging the Nature Culture Divide Conference" was held in Rye, New York at the Jay Estate in 2011 and resulted in progress to reimagine historic gardens at the site in a sustainable manner. Subsequent forums were co-sponsored by the Central Park Conservancy (2012) and the Presidio Trust (2015). Birnbaum's "What's Out There" program has also received attention. It has advanced from a website database of over 1350 landscapes to a sophisticated interface technology that can be accessed via a mobile phone. In 2013, Birnbaum galvanized a group of advocates to stop the demolition of Peavey Plaza in Minneapolis and helped negotiate terms for the rehabilitation of the public space. Birnbaum garnered widespread attention when he and others condemned plans by the Frick Museum to eliminate what the museum termed a temporary 1977 Russell Page garden as part