Six Flags Discovery Kingdom

Sources

• sixflags.com/discoverykingdom/attractions (Official attractions page (the park's ride list; the full list loads in the browser).)
• sixflags.com/sitemap/discoverykingdom.xml (Park sitemap listing every attraction page, used as the readable ride list: coasters Medusa, Kong, Cobra, Boomerang Coast-to-Coaster, Superman Ultimate Flight, Batman: The Ride, The Flash Vertical Velocity, Sidewinder Safari, Road Runner Express, The Joker; also Monsoon Falls, White Water Safari, Wonder Woman Lasso of Truth, SkyScreamer and others.)
• rcdb.com/4711.htm (RCDB: Six Flags Discovery Kingdom, 1001 Fairgrounds Drive, Vallejo, California; operating since 1986; 10 operating coasters (Roadrunner Express 1999, Medusa 2000, Cobra 2000, Flash: Vertical Velocity 2001, Kong 1998, Boomerang 1998, Superman Ultimate Flight 2012, Joker 2016, Batman The Ride 2019, Sidewinder Safari 2022); defunct Harley Quinn Crazy Coaster (2018-2019), Roar (1999-2015), Zonga (2003-2004), Greased Lightnin', Pandemonium (2008-2012); former names Six Flags Marine World 1999-2006, New Marine World Theme Park 1998, Marine World Africa USA 1986-1997.)
• en.wikipedia.org/wiki/Six_Flags_Discovery_Kingdom (Wikipedia: Marine World opened 1968 in Redwood City, moved to Vallejo in 1986; city took ownership in 1996 and hired Premier Parks; name history; Six Flags confirmed its purchase option June 5, 2007; 10 roller coasters; water rides Monsoon Falls and White Water Safari (both 1999, Intamin).)
• visitvallejo.com/listing/six-flags-discovery-kingdom (Visit Vallejo listing: 1001 Fairgrounds Drive, Vallejo, CA 94589.)
• s204.q4cdn.com/155295784/files/doc_news/2026/Nov/06/FINAL-CG... (Six Flags press release, Nov. 6, 2026: California's Great America (Santa Clara) will close after a 2027 Farewell Season ending Sept. 6, 2027; 2027 passholders also get access to Six Flags Discovery Kingdom in Vallejo, presented as continuing to operate. No closure of Discovery Kingdom is announced.)