Moscone Center
Moscone Center (pronounced "moss-coney center") is the largest convention and exhibition complex in San Francisco, California. It comprises three main halls: Two underground halls underneath Yerba Buena Gardens, known as Moscone North and Moscone South, and a three-level Moscone West exhibition hall across 4th Street. It was initially built in 1981 by architects Hellmuth, Obata & Kassabaum as one single hall, Moscone South, and named after San Francisco former mayor George Moscone, who was assassinated in November 1978.

Background
Although named after the slain former mayor, Moscone opposed the development of the area because he felt it would displace middle-class residents. The expansion of Moscone North and Moscone West in 1992 and 2003 added an additional 600,000 square feet (56,000 m 2) to its original 300,000 square feet (28,000 m 2) of exhibit space. It is known for hosting several large professional gatherings, such as the Macworld Expo, RSA Conference, American Geophysical Union's fall meeting, American Bar Association's annual meeting, the Game Developers Conference, the Apple Worldwide Developers Conference, JavaOne and public gated events such as WonderCon and the 1984 Democratic National Convention. PowerLight Corporation installed a large solar electricity system on the roof of the center in March 2004. The installation of this system marked San Francisco's first major step towards obtaining all municipal energy from pollution-free sources. With the 60,000-square-foot (5,600 m 2) solar array (675 kW capacity) in place, San Francisco boasts one of the largest city-owned solar installations in the country. The electricity generated by the solar system, combined with savings from energy efficiency measures, delivers the equivalent energy to power approximately 8,500 homes. The location of the complex in the South of Market area provides easy access to downtown San Francisco's many hotels and restaurants, as well as major transportation systems such as BART and Muni Metro. The Amtrak bus stop at Moscone Center (station code SFM) also transports riders to the Emeryville Amtrak station.

History
The South of Market Area where Moscone Center was built was claimed by the San Francisco Redevelopment Agency, and a protracted battle was fought by the displaced low-income residents during the 1960s and 1970s. In 1984, the Democratic Convention was held at the Convention Center.