The Conference Center, in Salt Lake City, Utah, is the premier meeting hall for the Church of Jesus Christ of Latter-day Saints (LDS Church). Completed in 2000, the 21,000-seat Conference Center replaced the traditional use of the nearby Salt Lake Tabernacle, built in 1868, for the church's biannual general conference and other major gatherings, devotionals, and events. It is believed to be the largest theater-style auditorium ever built. Features The 1.4 million square foot (130,000 m2) Conference Center seats 21,200 people in its main auditorium. This includes the rostrum behind the pulpit facing the audience, which provides seating at general conference for general authorities and general officers of the church and the 360-voice Tabernacle Choir at Temple Square. The auditorium is large enough to hold a Boeing 747 in the space between the seats and the rear of the stage. All seats in the audience have an unobstructed view of the pulpit because the roof is held up by radial trusses. The balcony is supported by a series of 34 cantilevers. This construction method allows the balcony to sink under full capacity. Behind the podium is a 7,708-pipe and 130-rank Schoenstein pipe organ. Underground is a parking garage that can hold 1,400 cars. A modernist, three-story chandelier hangs in a skylight in the interior of the building. A waterfall descends from the spire. City Creek flows in a rough-hewn riverbed, complementing the Conference Center. On the third floor of the Conference Center there are busts of current and past church presidents and photographs of church leaders; photographs of female church leaders were added in 2014. Because the building sits near the base of Salt Lake City's Capitol Hill, the roof is landscaped for attractiveness, an extension of the Gardens at Temple Square. About 3 acres (12,000 m2) of grass and hundreds of trees have been planted on the roof. Twenty-one native grasses were employed to conserve water and showcase local foliage. The rooftop garden includes a central garden of rectangular planters of aspen and conifers with long runnels and basins of water. The landscaping is meant to echo the mountains and meadows of Utah. Conference Center Theater Attached to the main building on the northwest corner is the 900-seat Conference Center Theater that can be used as a dedicated theater or as an overflow room. Planning and construction The design of the Conference Center was accomplished by Portland, Oregon-based Zimmer