The Warner Roof sits atop the Olney Margolies Athletic Center, and is the home of Brown field hockey, as well as serving as a practice facility for various other Brown sports, including football and lacrosse. It is also utilized for intramural sports. Completed in November 1981, the artificial turf field has lights for night competition and practices. A new Astroturf playing surface was installed prior to the 2000 season, changing the pitch of the field and adding new fencing around the perimeter.