Art in outdoor public spaces is a relatively new phenomenon to Las Vegas, mostly because the only time people spend outside is by the pool or hustling to get to another casino. But Aria wisely (I think) decided not to confine its works by 15 major artists to a stuffy museum within the resort, opting to make the entire hotel, and its neighbors, the gallery. A free app leads viewers through the casino to such works as the 250-foot LED wall by Jenny Holzer that scrolls “Vegas-isms” hidden at North Valet; or Big Edge, an installation of recycled aluminum canoes. The app will also let you know why you should walk between the Kirins when you enter the casino for energy and good luck. There’s also ephemeral art, like Glacia at The Shops at Crystals, which are ice columns that rise and melt each day; or the Lumia fountain which spouts color-infused water in the circle drive. Remember that the resort and its surroundings are huge—wear comfortable shoes to get you through the art hike.