Just about every flat vertical surface appears to be covered with imaginative art in what’s called the Wynwood Walls portion of the Wynwood neighborhood of Miami, Florida, which Wikipedia calls “one of the city’s most happening districts.” It has also been called an “outdoor museum” of art and trendy culture, including hundreds of murals, street sculptures, “urban graffiti,” boutiques, bistros, and bars frequented by “hip” young adults in particular.