Waldheim teaches design studios at the intersection of landscape and contemporary urbanism. He offers the Proseminar in Landscape Architecture (GSD 3501) as well as lecture and seminar courses in the histories, theories, and contemporary practices of landscape architecture and urbanism.
Waldheim's research focuses on landscape architecture in relation to contemporary urbanism. He coined the term landscape urbanism to describe emerging landscape design practices in the context of North American urbanism. He has written extensively on the topic and edited The Landscape Urbanism Reader (Princeton Architectural Press, 2006). Citing the city of Detroit as the most legible example of urban industrial economy in North America, Waldheim is editor of CASE: Lafayette Park Detroit (Prestel / Harvard Design School, 2004) and co-editor, with Jason Young and Georgia Daskalakis, of Stalking Detroit (Barcelona: ACTAR, 2001). On the history and future of Chicago urbanism, he is author of Constructed Ground (University of Illinois Press, 2001) and co-editor, with Katerina Ruedi Ray, of Chicago Architecture and Urbanism: Histories, Revisions, Alternatives (Chicago: University of Chicago Press, 2005). He is currently writing the first book-length history of Chicagos OHare International Airport, entitled Chicago OHare: A Natural and Cultural History (Chicago: University of Chicago Press). His writing has also appeared in Landscape Journal, Topos, Log, Praxis, 306090, Canadian Architect, Dimensions, and Landscape Architecture Magazine.
Previously, Waldheim was Associate Professor and Director of the Landscape Architecture program at the University of Toronto. He has lectured on landscape and contemporary urbanism across North America, Europe, and Australasia. He has taught as a visiting faculty member at Harvard University, the University of Michigan, the University of Pennsylvania, and Rice University. He is an honorary member of the Ontario Association of Landscape Architects, and in 2006 was recipient of the Rome Prize Fellowship in Landscape Architecture at the American Academy in Rome.