Madison Blue Spring State Park is a must see for people who love swimming and cave diving. This state park is located in Lee, Florida about an hour from Jacksonville. Madison Blue Spring State Park is popular for its scenic woodlands and its 82 feet wide, 25 feet deep, spring. Some of the many things you can experience include birding, paddling, fishing, scuba diving, and of course, swimming. As for amenities, Madison Blue Spring State Park provides picnic pavilions, as well as being a pet friendly park. This state park is a place where anyone can come and have a great time, In fact, it was voted #1 swimming hole in the country in 2015!