Six Flags Discovery Kingdom
Videos
Six Flags Discovery Kingdom is a 135-acre animal theme park located in Vallejo, California, off of Interstate 80 between San Francisco and Sacramento. The park includes a variety of roller coasters an
Logo used since 2025
SkyScreamer and Medusa in 2023
1970 orca show at the original Marine World in Redwood City
People walking at Six Flags in Vallejo
Marine World/Africa USA
Videos
Marine World/Africa USA was an animal theme park located in the Redwood Shores area of Redwood City, California. The park was named Marine World when it first opened in 1968, before merging with a lan
Six Flags Discovery Kingdom
…Kingdom 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. The park eventually moved to a new site in Vallejo, California, opening in 1986. The new Marine World opened to…
1984 ticket for Marine World Africa USA