The campus' primary facility is a stone building, known as Greystone Cellars and built for William Bowers Bourn II as a cooperative wine cellar in 1889. Hamden McIntyre designed the gravity flow winery along with other wineries of the decade. The building changed ownership several times, and was notably owned by the Christian Brothers as a winery from 1945 to 1989. It was used as a winery until its sale to the school in 1993, and was added to the National Register of Historic Places in 1978.