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City: San Francisco
Date: Steam Carnival is ri., 10 a.m.–5 p.m. and Sat. & Sun., 10 a.m.–6 p.m. Discovery Day is Sat., 10 a.m.–5 p.m.
Discovery, Science & a Carnival
Where: SoMa, AT&T Park (and Pier 48) , 24 Willie Mays Plaza, San Francisco, Ca. This is a free event. This event is open to all ages.