Six Flags Discovery Kingdom Coupons - Vallejo, CA You are here Home > Amusement Parks > Six Flags Discovery Kingdom Coupons - Vallejo, CA Tweet Our address Address: 1001 Fairgrounds Dr. Vallejo, CA 94589 GPS: 38.137101, -122.23025000000001 Web: http://www.sixflags.com/discoveryKingdom/index.aspx