Unless you've lived here for a lifetime, you probably still don't know the names of all the cactuses growing throughout the city. Nobody's going to quiz you, but if you're going to be an urban desert dweller, you might as well become something of a cactus connoisseur. Artist Jen Urso set out to map the locations of various cactuses growing in the city several years ago, and her latest cactus map shows you where to find more than 50 varieties, which means it's a great way to learn more about the urban desert terrain. The map, which she sells through her website, is a great tool for locals and visitors because it illustrates where to find a particular cactus while also providing basic info about each one. It's a plus that you can't plug the name of a cactus into your GPS and then have it spit out directions, because the whole point of using the map is to reignite your sense of adventure.