This map data layer represents the footprints of all buildings, larger than 100 square feet, for the City of Cambridge, Massachusetts. Coverage includes Institutional (public buildings, including schools, libraries, churches, government centers, hospitals, major government institutions); Municipal (City owned buildings); Subway headhouses (outline of subway headhouse). Detached garages are included, but other minor structures such as sheds are not. No structure smaller than 10'x10' is represented.