page_title: San Francisco International Airport station
section_title: Wind Portal
hierarchical_section_title: San Francisco International Airport station / Station layout / Wind Portal
caption_attribution_description: English: Wind Portal, an artwork by Ned Kahn, located in San Francisco International Airport station
context_page_description: San Francisco International Airport station is a Bay Area Rapid Transit terminal station located adjacent to Garage G inside the San Francisco International Airport. The elevated station is a transfer point to the AirTrain people mover system at Garage G/BART station.
  The station opened for AirTrain service in February 2003, with BART service beginning that June. After several service changes between 2003 and 2020, the station is served by the Antioch–SFO/Millbrae line and the SFO–Millbrae line at all operating hours.
context_section_description: Wind Portal is a 2003 artwork by Sebastopol artist Ned Kahn on the surface of the cylindrical opening in the floor separating the BART station from AirTrain. Passengers transferring between the two rail services ride escalators or walk on stairs through the opening, which measures 124 inches (3,100 mm) high with a 16-foot (4.9 m) radius. The artwork consists of 200,000 stainless steel disks, each 1 inch (25 mm) in diameter and individually hung so they respond to air currents induced by train traffic. John King, urban art critic for the San Francisco Chronicle, praised it, saying it was "[m]esmerizing ... an ever-changing silver shimmer ... indefinable movements reacting to distant winds as well as the whoosh of trains. The experience is hard to predict; there's a sense of anticipation."
caption: Wind Portal in 2009
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