The National Trust Sites and Monuments Record (NTSMR) is a resource and repository of information about the archaeology and historic landscapes under National Trust care. It is sophisticated computerised database which supports an extensive paper archive.

The NTSMR has a wide scope, covering:

• All periods, from Neolithic settlements to Second World War monuments.
• Sites of international, national, regional or local interest, whether World Heritage Sites, Scheduled Monuments or locally defined Conservation Areas.
• Traditional archaeology such as Roman forts, castles, burial sites and buildings.
• Agricultural sites that are still in use today like farmsteads and vernacular buildings.
• The remains of industries such as charcoal burning, mining or quarrying.
• Military sites such as Civil War defences or the Cold War installations such as radar stations or the remains at Orford Ness.

The computerised database features:

• The monument's description, history and associated archives.
• Work or surveys that have taken place.
• Evaluation of the monument's importance, condition and management.

The supporting archive comprises:

• Plans of sites (in both paper and digital formats).
• Maps of the surrounding historic landscape (to place the individual monuments into context).
• Over 30,000 slides and photos.
• Historic landscape reports for many of the National Trust properties.
• Specialist reports, such as excavation, measured surveys and finds reports.