This year the Huntington celebrates the centennial of its spectacular desert garden, one of the largest such collections of cacti and other succulents in the world. Visitors to the twelve-acre garden marvel at its more than 3,000 species, including the vivid blue and green Puya, a rare type of bromeliad; the Lithops, or "living stone," whose camouflaged leaves mimic the shape and color of rocks; and the dazzling red, orange, and yellow torch-like blooms of the winter-flowering aloe.