Still in operation, the world's first pay-one-price theme park opened in this U.S. state in 1961
The park was an instant success, and is still the most visited theme park in 
Texas .... 1971  Walt Disney World in Florida opens as the first full-scale 
vacation... [DOC] [TLE] six flags timeline - California State University, Sacramento [PAR] Disneyland was the first "theme park," and rather than focusing on thrill rides, 
roller ... 1961 - Six Flags Over Texas opens to the public at a cost of just over $3 
... Texas (which for a brief period was its own country) and the United States.