The San Manuel Amphitheater (originally Glen Helen Pavilion and formerly Blockbuster Pavilion and Hyundai Pavilion) is a 65,000 capacity amphitheater, located in the hills of Glen Helen Regional Park, in the city of San Bernardino, California.It is the largest outdoor music venue in the United States. The orchestra, box, and loge sections seat a combined 10,902 people, while the lawn section seats 54,098.