Riddle designed the campus in the English
Cotswold style, drawing on the
Arts and Crafts movement. After a 1910 trip to England, she adopted 16th-century building methods and imported craftsmen from the Cotswolds to work alongside American laborers. Red sandstone was quarried on site, and Riddle established a blacksmith's forge on the campus to produce all hand-wrought hardware—hinges, latches, and lanterns—used throughout the buildings. Riddle instructed masons and carpenters to "dispense with all mechanical methods" and "gauge all verticals by sight," reasoning that "a natural variation in line and surface was far more desirable ... than accuracy." The resulting buildings have swooping slate roofs, irregularly placed dormers, and massive chimneys with textured stone walls. The campus is organized around two quadrangles—the Pope Quadrangle and the Brooks Quadrangle—along with a village green and a grouping of service buildings known as the Farm Group, which includes the Forge, the Water Tower, and the Chapel (originally the Carpenter's Shop, converted in 1948). File:Avon Old Farms School - chapel exterior.jpg|The chapel, originally the Carpenter's Shop, converted in 1948 File:Avon Old Farms School - Diogenes.jpg|Diogenes sculpture, a detail of the Pope Quadrangle ==Athletics==