Hike through 46,000 acres of coastal wetlands, salt marshes, and hardwood forests within the Timucuan Ecological & Historic Preserve. Visit nearby Fort George Island for a taste of history and boating through the tidal waters. To the south of Jacksonville, near Ponte Vedra Beach, the Guana Tolomato Matanzas National Estuarine Research Reserve offers thousands of acres of salt marsh and mangrove tidal wetlands.