Castlemap
Interactive world map and downloadable CC0 dataset of castles, fortresses, palaces, and ruins around the world.
Why it matters
Castlemap maps castles, fortresses, palaces, and ruins worldwide, with location and chronology data and links to related Wikidata and Wikipedia records. Coverage grows over time, and the site provides current statistics alongside its data downloads.
Its downloadable CC0 GeoJSON and CSV data make it useful for spatial history, teaching, and exploratory research on fortifications and palaces. Researchers can reuse the location and chronology data directly or connect its Wikidata identifiers to other datasets.
Localized interfaces and machine-translated landmark descriptions support use in several languages. Researchers should check the linked sources when interpreting descriptions and dates.