@Large by the Numbers

A volunteer assembles a section of Trace, 2104; photo: Nina Dietzel

By any measure, @Large: Ai Weiwei on Alcatraz is a monumental undertaking. Need evidence? Here are just a few of the facts and figures.

• Kites making up the body of the dragon in With Wind: 70
• Prisoners of conscience and political exiles portrayed in Trace: 176
• Countries where Trace prisoners are held: 33
• LEGO bricks used in Trace: 1.2 million
• Volunteers who helped to build Trace in San Francisco: 82
• Pages in the Trace assembly manual: 2,327
• Tons of metal in Refraction: over 5
• Political prisoners who can receive postcards from visitors via Yours Truly: 116
• Countries where Yours Truly postcards will be sent: 22
• Visitors to Alcatraz on a typical day: 5,000
• Miles from Ai Weiwei’s Beijing studio to Alcatraz: nearly 6,000
• Times Ai Weiwei has been able to visit Alcatraz: 0