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→Later Developments
==Later Developments==
George Millay, who famously founded Sea World in San Diego and later Florida, took the idea developed by Sellner and increasingly others in the 1960s and began to incorporate waterslides in his parks. Waterslides became very popular within existing parks, so much so long lines were always evident. This gave Millay the idea that a purpose-built water park might be enough to be profitable. He needed a warm, year-round place to have such a park to keep revenues steady. As Orlando, Florida already hosted well known amusement locations, he chose Orlando, Florida to found Wet n’ Wild as the first purpose-built water park in the 1970s.
==Modern Trends==