Singapore's Award Winning Changi Airport (fig.), named in 2023 as the World's Best Airport, features a rooftop Cactus Garden with more than 100 species of cacti and arid plants.

Notable plants in this garden include the edible Cereus Apple Cactus and Prickly Opuntia Pear Cactus, the Golden Barrel Cactus, Old Man Cactus, Ponytail Palm Trees, and various forms of Cycads.