The McMillan project preserves historic elements of a 20th-century water filtration site while creating a vibrant mixed-use community in Washington, D.C. The plan integrates new construction, historic preservation, and landscape architecture, including medical offices, housing, retail, and over six acres of parks. Designed to meet LEED-ND Gold standards, it also preserves historic filtration beds and conceals parking underground. This collaborative project balances the needs of the city, clients, and the local community.