The rain forest biodome is kept hot and humid with special lighting and atmospheric control systems. It has four levels designed to mimic different rain forest environments. A 100,000-gallon tank serves as home to Amazonian river dwellers. Stacked on top of it, and accessible via curving ramps, are biomes patterned on habitat in Borneo, Madagascar and Costa Rica.

Photo: Annaliza Savage/Wired.com