
Recreational areas, federal lands, historic sites, museums, and other attractions/resources(US).
Recreation Information Database API is a free Open Data API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Recreation.gov is your source for discovering and experiencing America's federal recreation activities and outdoor adventures.
Details from ridb.recreation.gov.

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The Recreation Information Database API is provided by Recreation.gov (ridb.recreation.gov). Recreation.gov is your source for discovering and experiencing America's federal recreation activities and outdoor adventures.
Yes. The Recreation Information Database API is listed in the Open Data category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Recreation Information Database API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Recreation Information Database API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Recreation Information Database API is served over HTTPS, so it's safe to use in production.