Six Flags Discovery Kingdom (formerly Six Flags Marine World)

Six Flags Discovery Kingdom
Vallejo, California

This amusement park opened in 1968 as Marine World in Redwood City, California. Its name later became Marine World Africa USA. In 1986, the park moved to its current location in Vallejo, California. In 1996, the park was purchased by Premier Parks, Incorporated. Two years later, the park received 14 new rides as it was transformed from simply a place to see animal exhibits and shows into a park complete with thrill rides. For most of 1998, the park was The New Marine World Theme Park, but it was branded with the Six Flags Marine World name in November 1998. Its name changed to Six Flags Discovery Kingdom in 2007.

Two coasters have left this park:

Zonga (2003-2004) Before being moved here, this four-inversion Schwarzkopf ran as the Texas Tornado (1998-2000) at Six Flags AstroWorld. It ran for parts of the 2003 and 2004 season, but was removed from the park in 2006. It is unclear if it will operate elsewhere.
Pandemonium (2008-2011) This coaster (pictures and details below) was brand new in 2008, but it was scrapped after just four years in order to free up more space for new rides.

Cobra