A notorious former prison off of San Francisco's coast will be the site of Ai Weiwei's latest exhibition, "@Large: Ai Weiwei on Alcatraz," opening September 27. The renowned Chinese artist — who has served time behind bars in his native country for the politically outspoken content of his work — has been working remotely on the site-specific project in a transcontinental collaboration between Beijing and San Francisco with curator Cheryl Haines. Because Ai Weiwei is currently on house arrest for tax evasion in Beijing, the project took three years of planning and nine months of making with the help of many volunteers. He will personally never see the work.