Comprehensive dataset of Historical Districts in the City of Cambridge. Historic districts are areas in which historic buildings and their settings are protected by public review. Historic district ordinances are local laws that are adopted by communities using powers granted by the state. Historic districts comprise the city's significant historic and architectural resources. Inclusion in a historic district signifies that a property contributes to an ensemble that is worth protecting by virtue of its historic importance or architectural quality.More information available at: http://www.cambridgema.gov/Historic/landmarks.html