The Dillaway-Thomas House at Roxbury Heritage State Park was built in 1750 and served as headquarters for General John Thomas and the Continental Army during the siege of Boston in 1775. The house has been restored to show how it changed over two centuries and now offers exhibits which interpret both the past and present history of Roxbury and its people and cultures. A new park adjacent to the Dillaway-Thomas House provides a scenic overlook of downtown  Boston.

The Roxbury HSP Signature Park Project is one of six urban park projects that have been identified as priorities. These projects will help revitalize urban neighborhoods by opening up or upgrading green spaces for outdoor recreation and by rehabilitating historic community landmarks.  The Executive Office of Energy and Environmental Affairs is working with state agencies, municipal governments, and local community leaders to implement these projects on an expedited timeline, with the goal of having each project substantially complete by the end of 2014.