There are multiple places you can experience the pleasure of looking at art while escaping the Florida heat. But should you venture out, there's a bit of art outside on the exteriors of the Miami Design District that's worth a second look. The abundance of empty walls throughout the various sectors of the city has encouraged and inspired young artists to flex their creative muscles away from the enclosed gallery or institutional space. The Design District is no exception. World-renowned artists including Shepard Fairey, RETNA, ROA and El Mac have all made their marks on spaces the conventional gallery simply could not provide.