The original Six Flags theme park, known as Six Flags Over Texas, is located in Arlington, Texas, midway between Dallas and Fort Worth. It was founded by real estate developer Angus G. Wynne Jr. and opened its gates on August 5, 1961. The name "Six Flags" refers to the six different nations that have governed Texas throughout its history: Spain, France, Mexico, the Republic of Texas, the United States, and the Confederate States of America. When it first opened, the park was a massive success, featuring themed sections for each of these "flags" and innovative attractions like the first-ever log flume ride (El Aserradero). Unlike many other theme parks of the era that struggled, Six Flags Over Texas was profitable within its first year, paving the way for the creation of a global entertainment empire. In 2026, the park is still in operation and remains a flagship location for the company, blending historical "Old Texas" charm with record-breaking modern roller coasters like The New Texas Giant. It is recognized as the pioneer of the "regional theme park" model, which focused on providing high-quality entertainment to locals within a short drive rather than relying solely on international tourists.