Open data
The tables behind this site, free for any use without permission or attribution. A link back helps other people find the source. Each file is written by the same weekly job that rebuilds the pages, so it is never older than the site. Current snapshot: October 17, 2026.
One row per listing on the National Register of Historic Places, 101,425 of them: where it is, what kind of resource it is, when it was listed, whether it is a National Historic Landmark, and the year built, style, and architect where Wikidata records them.
Columns: ref, name, type, address, city, county, state, listed, nhl, lat, lon, built, styles, architects, wikipedia, slug, source, coord_source
The National Historic Landmarks only, 2,758 rows with the same columns as the full listings file. Every row has a full record on Register Atlas at /places/{slug}/.
Columns: ref, name, type, address, city, county, state, listed, nhl, lat, lon, built, styles, architects, wikipedia, slug, source, coord_source
Every National Historic Landmark with coordinates as a compact JSON array of points: name, slug, city, state, year built, a Wikimedia Commons image URL, and a public-access flag. Park Atlas and Campsite Atlas read this file at build time to show landmarks near a park or campground.
Fields: ref, slug, name, city, state, lat, lon, built, image, access
Provenance and cadence
The listing roster comes from the National Park Service's National Register database and its weekly list of new and removed listings. Year built, style, and architect come from Wikidata where a listing has a record there. The full source list is on the methodology page. A GitHub Actions job refreshes the data every Saturday and republishes these files.
Suggested citation: "Register Atlas open data (October 17, 2026 snapshot), derived from National Park Service and Wikidata sources, registeratlas.com/data/."