The historic ROYALL House is a National Historic Landmark. It was built in 1637 for Governor John  WINTHROP.

Isaac ROYALL constructed the slave quarters in 1732, which he used to house his 27 slaves. The structure was later used as a stop on the Underground Railroad.

This Boston College site features the ROYALL House among other examples of 18th-century architecture, including photographs and architectural plans of the ROYAL House.