The first Six Flags park was Six Flags Over Texas, which opened in Arlington, Texas, on August 1, 1961. It was founded by real estate developer Angus G. Wynne, Jr., who originally envisioned the park as a temporary way to generate income from vacant land. The "Six Flags" name refers to the six different nations that have governed Texas throughout its history: Spain, France, Mexico, the Republic of Texas, the Confederate States of America, and the United States. The park was a pioneer in the industry, introducing the concept of a single "all-inclusive" admission price rather than charging per ride. It also debuted several world-firsts, including the first log flume ride (El Aserradero) and the first modern mine train coaster. Following its massive success, the brand expanded to Georgia and Missouri, eventually becoming the global amusement giant it is in 2026.