I am a fan of visiting museums whenever I can. I have seen public art displays at airports in many cities, the SFO Museum has some nice exhibits. The following is the Art of Recology display currently on Terminal 3 at concourse for United Airlines with a number of artists using recycled materials. It is very cool and worth spending time looking at while waiting for your flight once you clear security.
Bottom Left Artist : Rick Carpenter Bottom Right Artist Linda Raynsford
Artist: Ethan Estess
Left Artist: Hector Dominicio Mendoza Right Artist: Jim Growden
Top: Dress by Sandy Drobny
Bottom Left Artist: Mark Faigenbaum Right Artist: Susan Leibovitz Steinman