Peter Christensen is a Ph.D. candidate in Architecture, Landscape Architecture and Urban Planning at the Harvard University Graduate School of Design where he is also an affiliate of the Aga Khan Program for Islamic Architecture. His work focuses on geopolitical traditions and their connections with environmental issues relating to the borders of Islamic and Christian cultures in the nineteenth and twentieth centuries. Along with Barry Bergdoll, Christensen was the recipient of the Philip Johnson Book Prize in 2010 from the Society of Architectural Historians. Christensen is the recipient of grants from the Fulbright Foundation, Deutscher Akademischer Austausch Dienst and the Historians of Islamic Art Association.