OpenStreetMap-Portal for fortications (hill forts, castles, city walls and forts)
This page contains information relating to mapping activity that is specific to fortifications.
This includes prehistoric, mediaeval and modern castles, fortresses, city walls, and ramparts.
The long term objective is a complete coverage of those buildings and ruins in OSM. Not only the buildings, ruins, and outlines but also the tourist infrastructure should be covered: Parking lots, roads and paths, museums and gastronomical facilities.
Steps
Discuss and improve a common proposal to tag fortresses and castles, see historic=castle.