Historic Green Buildings examines the term “green building” and what this means from a world perspective. While the Leadership in Energy & Environmental Design (LEED) remains the international standard for a rating system, it is not the only one. Students research and respect building construction from a global perspective. Is the greenest building the one already built? Examining this question and the tools of historic preservation is also a strong component in the course. The first LEED building on campus was an existing building, this is true for nearly every other country as well.