One of the most fascinating aspects of Rainbow Springs State Park in Florida is its rich history as a "vintage" tourist attraction. Before becoming a state park in 1995, the headspring complex operated as a private park from 1934 to 1973, complete with glass-bottom boats and live mermaid shows, similar to those at Weeki Wachee. Today, it remains Florida's fourth-largest first-magnitude spring, pumping out a staggering 493 to 600 million gallons of water daily. This crystal-clear water maintains a constant temperature of 72°F (22°C) year-round, making it a timeless destination for swimming and tubing. The park also features three mesmerizing man-made waterfalls built atop former phosphate mining hills, blending industrial history with the area's lush, natural aquatic beauty.