Free
STRANGE PLACES IN NORTH FLORIDA
North Florida is the register's smallest region by count and its densest by theme. Four entries, all within an easy day of Gainesville or Ocala, and all of them about holes in the ground or the consequences of somebody's plan.
Two are sinks. One is a bowl 500 feet across, measurably cooler at the bottom than at the rim; the other is a collapsed cavern full of clear water at a fixed 72 degrees, which takes divers. Together they are the best short introduction to why Florida's landscape looks the way it does.
The other two are human. A house on Lake Weir that agents fired an estimated 1,500 rounds into in 1935, and which Marion County later moved several miles by flatbed to restore, and the Cross Florida Barge Canal, a scheme to cut the state in half that was funded, started, and then stopped, leaving structures in the woods with nothing to do.
Free
Free outside, tours occasional
$20 snorkel, $38 dive
$4 per vehicle