The Boyce Thompson Arboretum in Arizona, is an interesting place. It is not like the traditional arboretums we are familiar seeing here in New York, where there is a ton of greenery. This was a more dry, and arid place for plants to grow. Therefore making all the plants, things that could absorb and hold water for a very long time (like cactuses!) They have guided tours, nature trails, and really interesting plants!