The less-developed eastern portion of campus is known as the Wash (formally Blanchard Park), and contains a large grove of coast live oak trees, as well as many athletic facilities. It is also home to the Sontag Greek Theatre, an outdoor amphitheater; the Brackett Observatory; the Pomona College Organic Farm, an experiment in sustainable farming; and the Seaver Theatre Complex, which includes a 335-seat thrust stage theater and 125-seat black box theater, among other facilities. The Studio Art Hall, built in 2015 to Leed Gold Certification, is behind the Oldenborg Center, and garnered national recognition for its steel-frame design.