W+CO designed extensive interior renovations to 17,000 square feet on three floors of the David Rittenhouse Laboratory Building. DRL is the home to the University of Pennsylvania’s Physics and Astronomy program, as well as the Mathematics department. Many other disciplines also hold classes in the building due to its ample lecture space, making DRL one of the most heavily used at the university. The original building was constructed in 1954, with a four-story expansion added in 1967. The project shown here is a lecture hall that was renovated to provide a flexible, state-of-art learning environment for a variety of academic subjects. This project also created new offices and laboratories, and included extensive mechanical upgrades and replacements. Classrooms were designed to be sleek, simple, well-lit and acoustically sound, while also incorporating the latest audio-visual technology. The construction cost for all DLR renovations was $1,200,000.