Sources:
Halloween things to do in Florida: The 10 most haunted places (jacksonville.com)
Koreshan State Park preserves wacky Florida history (floridarambler.com)
Castillo de San Marcos is a National Monument. Could it be haunted?
If you park your car at Spook Hill, it will roll uphill.
In 1982, thousands of frogs invaded Longwood, Florida. 4 days later, they were gone.