<Tr> <Th> Water rides </Th> <Td> </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.sixflags.com/discoverykingdom </Td> </Tr> <P> Six Flags Discovery Kingdom (formerly known as Six Flags Marine World, Marine World, The New Marine World Theme Park, and Marine World Africa USA) is a 135 - acre (55 ha) animal theme park located in Vallejo, California, roughly halfway between San Francisco and Sacramento on Interstate 80 . The park includes a variety of roller coasters and other amusement rides . Six Flags Discovery Kingdom has been part of the Six Flags chain of amusement parks since 1999 . Daily Public Transportation to the park is provided by Amtrak Thruway's 7 Route to Martinez station, Evans Transportation also provides daily service between a Courtyard by Marriott hotel adjacent to the northeastern border of the park and Oakland International Airport . Vallejo's local public transit provider SolTrans serves the park Monday through Saturday, connecting the park with Fairfield Transportation Center, Vallejo Station, and other points in Southern Solano County . </P> <P> Six Flags Discovery Kingdom first opened in 1968 as Marine World, a small zoo in Redwood City, California . In the mid-1970s, it merged with a failing land - animal park called' Africa, USA' and became Marine World Africa USA . </P>

Where is six flags discovery kingdom in california