Serving the Bay Area for more than a century, the American Institute of Architects, San Francisco Chapter, one of the largest of the AIA's nearly 300 chapters, represents more than 2,000 members in San Francisco and Marin County. Headquartered in the historic Hallidie Building—one of the world's first glass-curtain-wall-buildings, designed by Willis Polk and completed in 1917—AIA San Francisco is the Bay Area’s premier destination for architecture and design.