It's not easy seeing green in this city — so Barnes Park is nothing less than a 65-acre oasis from the mean streets and concrete deserts of Miami, and a great spot to round up the crew for a picnic. There are dozens of grills available for public use, and the picnic sites are spacious and well spread out. The park is one of the last pine rocklands in the area, and the trees provide ample (and oh-so-rare) shade from the South Florida sun. According to the Audubon Society, Barnes Park is one of the best places in the county to see migrating birds, and there are nice paths for walking or bike riding. There's even a nature center for the kids, which houses the Miami-Dade Fire Department Anti-Venom Unit's collection of snakes. The park is open from sunrise to sunset; group camping is available as well. Entrance to the park, of course, is free.