Shark Valley is on the northern edge of Everglades National Park and easily accessible by car. It has a 15-mile paved road loop, open to walkers and bikers (there is also a tram service) and at one end of which is a concrete observation tower. Shark Valley is a great place to see wildlife and the observation tower provides outstanding panoramic views of the Everglades prairie/savanna landscape. The tower is particularly good to visit around dusk because that is when flocks of local birds fly in to roost for the night in the surrounding trees. (You will also have a bird’s eye view of alligators in the adjacent pond.) But note that visiting around dusk means you will have to bicycle to the tower and return after the park closes, so bring your own bicycle and park your car on the side of Route 41, outside of the park entrance.
Also, in summer bring equal quantities of water and insect repellent.