The Main Auditorium is the heart of the Temple, equipped for the full staging of the 29 degrees, or plays, of the Scottish Rite. The stage contains 118 operating scene drops, all hand-painted by artists who specialized in stage scenery paintings of the late 19th Century era. The auditorium is Roman in design, with the high wall and ceiling paintings among the most beautiful in the Temple. The stage is one hundred feet wide and fifty three feet deep. There are 1,760 fixed seats in the auditorium, located on three levels. The great arch of the balcony, when built, was the largest unsupported cement arch in the world. The Kimball pipe organ in this room is one of only two concert organs ever manufactured by the Kimball Company, and is comprised of five registers, sixty-seven ranks, and 5,376 pipes. The pipes are located in the arch above the stage. The instrument is a world-class piece of art appraised in excess of $1 million. The ceilings contain decorative lined acoustic domes, typical of European opera houses, which provide superb sound quality to the room.