Boca Chita is the most-visited island in Biscayne National Park. It has a good-sized harbor and a grassy campground, as well as picnic areas, small sand beaches, and a stone lighthouse. To go for a walk on the island, you can follow this short trail loop. It’s a sandy path that starts in a grassy field with scattered palm trees, then goes into leafy hardwood forest. It more or less traces the south perimeter of the island, finding a few secluded beach areas between mangrove thickets. You might bring a camp chair and cooler to sit and enjoy the solitary views.