The National Map Corps
Structures
The structure feature types that volunteers are currently collecting include schools, colleges and universities, fire and EMS stations, law enforcement, prisons and correctional facilities, hospitals, ambulance services, cemeteries, post offices, courthouses, and city/town halls.
See our Structures List for a quick summary of what these points entail. For a more detailed definition of what each point represents, visit our Definitions page.
The National Map Corps structure feature map icons displayed in the web mapping editor application.
(Public domain.)