Moscone 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.