The architectural design of the Willow Creek Community Church –Crystal Lake is a direct result of the core convictions and mission of the church. The open and inviting appearance of the design is an intentional feature that connects the building to the site and the entire community. A warm and inviting design is accomplished by the curved walls of the building elevation. Stone, glass and wood are the featured materials of the exterior walls of the building. Clear glass windows, allows the buildings design to appear very transparent, further connecting the building interior to the exterior green spaces. A landscaped entrance plaza, amphitheater, and splash fountain are incorporated in the front lawn to invite the community to engage the site and the church building.