McKay devised a modular system of arches that would define the open-air structure. Using the donated cypress and aluminum, he created six wall-and-roof modules and slid them closer together or further apart to accomodate the existing trees and roots. "Because there are so many trees on the site, we had to negotiate a system in the initial design phase," McKay says. "When we were constructing the pavilion, if we hit a root, and we did, we could just move the modular without it affecting the overall design or construction." Photo by Frank Doering.  Photo 3 of 8 in Botanical Garden Pavilion