Amusement Park Formerly Known as Six Flags St. Louis Gets a New Name
A longtime Missouri amusement park has officially entered a new era. Six Flags St. Louis in Eureka, Missouri, is now called Mid America Adventure, ending the park’s 55-year run under the Six Flags name.
The rebrand was announced on August 27, 2026, following the park’s sale earlier this year. The new name also brings back part of the property’s original identity: it opened in 1971 as Six Flags Over Mid America.
Why Did Six Flags St. Louis Change Its Name?
The name change follows a major ownership transition.
In April 2026, Six Flags sold six U.S. amusement parks to EPR Properties, a Kansas City-based real estate investment trust. The parks are now operated by Enchanted Parks, a Florida-based amusement and hospitality company.
The properties involved in the transaction included:
- Six Flags St. Louis
- Valleyfair in Minnesota
- Michigan’s Adventure
- Worlds of Fun in Kansas City
- The Great Escape in New York
- Schlitterbahn Water Park Galveston
Six Flags La Ronde in Montreal was also sold to EPR Properties but has a separate operator.
With the change in ownership, keeping the Six Flags branding was no longer part of the park’s long-term identity.
What Is the New Name of the Park?
The former Six Flags St. Louis is now officially Mid America Adventure.
The new branding includes a logo featuring the St. Louis Gateway Arch, a roller coaster and a reference to the property’s water park. The name itself is a nod to the park’s original identity as Six Flags Over Mid America, which opened on June 5, 1971.
The park later became Six Flags St. Louis in 1997.
That makes the latest change more than a simple corporate rebrand. It reconnects the amusement park with its original name while establishing a separate identity under Enchanted Parks.
Is the Park Still Open?
Yes. Mid America Adventure is operating for the 2026 season.
The park’s official information says its management team remains in place, with Enchanted Parks focused on maintaining the park and making improvements over time.
The park is also already promoting its 2027 season pass program, while the remainder of the 2026 season includes events such as its Halloween programming.
What Happens to the Rides and Attractions?
The name change does not mean the amusement park is suddenly becoming a completely different attraction.
Enchanted Parks says it intends to preserve the park’s legacy and guest favorites while making improvements. The company has also said existing intellectual-property relationships would remain in place for the 2026 season.
However, the longer-term future of some branded attractions is less certain.
The park has used DC Comics and Looney Tunes characters and branding, and officials have said discussions over those licensing arrangements are continuing. The Hurricane Harbor water park is also expected to receive a new name.
So visitors should expect the transition to continue beyond the initial name change.
What Does the Rebrand Mean for Visitors?
For travelers planning a visit, the most important point is simple: the amusement park itself has not disappeared or closed because of the rebrand.
The rides, water park and seasonal events remain central to the property. The biggest immediate change is the name and branding visitors will see around the park.
The park’s 2026 guest information also says season passes and tickets purchased from the park before April 6, 2026 remain valid for the 2026 season. Passes purchased after that date have different access rules under Enchanted Parks.
Travelers should therefore check the current park website before visiting, particularly if they hold an older Six Flags pass or are planning to purchase a new season pass.
A New Chapter for a 55-Year-Old Amusement Park
Mid America Adventure is not a brand-new amusement park. Its history stretches back to 1971, when it opened as Six Flags Over Mid America.
The latest name change marks the first time in 55 years that the park will operate without “Six Flags” in its name.
For longtime visitors, that makes the rebrand significant. But for travelers considering a visit, the more useful takeaway is that this is primarily a change in ownership and identity rather than the end of the park.
Mid America Adventure is now the name to look for when planning a visit to the longtime St. Louis-area amusement park.