In Palm Beach Gardens
Frenchman’s Forest Natural Area 
Two loop trails making up a 2.5-mile hike meander through a variety of habitats, from tidal marsh to pine flatwoods, scrub, and cypress slough. On Prosperity Farms Road, north of PGA Boulevard.
Grassy Waters Preserve
0.6-mile boardwalk through cypresses and prairies of Loxahatchee Slough, plus 2 miles of trails on northwestern edge of slough. Stop in the nature center for directions to outlying trails, and join a swamp walk when they’re being offered! On Northlake Boulevard, just west of the Bee Line Highway.