Fort Clinch State Park offers camping by the sea, and extensive bike trails along a slender peninsula. But the main reason to visit is its namesake. Fort Clinch is one of the largest brick structures in Florida, and a must-see for architecture buffs.
Location: Fernandina Beach
Fees: $4-6 per vehicle. $2 per person fort admission.
Open: 8 AM until sunset daily
Leashed pets welcome
Although the fort is the focus here, there are activities galore beneath the tight-knit canopy of oaks along this peninsula. Savor a day along the dunes at the beach, take a wild ride on ancient dunes along the mountain biking loop, or go gator-spotting on a hike around Willow Pond. Two campgrounds, big beaches, shady trails, and one whopping big fort make this a great destination.