The sheer size of Grassy Waters – 23 square miles – is breathtaking enough, but you’ll find plenty of eye-raising diversions while strolling its boardwalk. Measuring a mile long (round-trip) and carving through the mosaic of wetlands, tree islands and forested hammocks that compose Grassy Waters, the boardwalk is a perfect vantage point in which to spot wood storks and white ibis, great blue herons and white-tailed deer, bobcats and, naturally, alligators. So bring binoculars – and comfortable sneakers. The boardwalk is also stroller- and wheelchair-friendly.