The Marshall Butterfly Pavilion is just off the Red Trail at the Desert Botanical Gardens. It’s not a very large exhibit, but it is very colorful and lively. Admission to the Pavilion is extra — 3.50 to be exact… and the exhibit is «outdoors» and shaped sort of like a hanger. It is also not unidirectional flow… despite there being just one entrance and one exit. But I was able to get some great shots of the butterflies. They aren’t very social(in that they don’t really land on you) but its okay, for the most part, they are very photogenic.