Treadwell Mansion & Carriage House 5212 Broadway, Oakland, CA 94618

Treadwell Mansion & Carriage House is a historic institution located in the Rockridge neighborhood of Oakland, California. Built in 1875, the mansion and carriage house were once part of the campus for California College of the Arts. The property has been listed on the National Register of Historic Places, California Historical Landmark, and Oakland Designated Landmark. Also known as James Treadwell Mansion, Treadwell Hall, and Macky Hall, the Gothic Revival and Eastlake-Stick style buildings were originally built for the owners of the Tesla Coal Mine. In 1922, the property was purchased by Frederick Heinrich Wilhelm Meyer, founder of the California School of Arts and Crafts, which later became California College of the Arts. After serving as part of the campus for nearly a century, the institution moved to San Francisco in 2022.