The Peter Tufts House (350 Riverside Ave.) is thought to be the oldest all-brick building in New England. Another important site is the "Slave Wall" on Grove Street, built by "Pomp," a slave owned by the prominent Brooks family. The Isaac Royall House, which once belonged to one of Harvard Law School's founders, Isaac Royall, Jr., is a National Historic Landmark and a local history museum. The house was used by Continental Army troops, including George Washington and John Stark, during the American Revolutionary War.