When my son was four years old he went to this centrally located San Francisco art fun house. He loved it. My son is almost ten now, and he still loves it. He has made cards, music, and claymation movies. Near Moscone Center, there is a playground, a bowling alley, a merry go round, an ice skating rink and Zeum all in the same general location. Make a day of it. The wee little ones won't like it but four and up will have a blast. There are supplies so you can craft as well, everyone is entertained.