As of July 17. 2024, the US National Park Service now has 430 sites across the country.
The newest addition is the Blackwell School in Marfa, Texas, designated as the Blackwell School National Historic Site this July. The bill to honor the site was passed in Congress and signed by President Biden in 2022, but it stipulated that the historic schoolhouse wouldn’t officially become part of the National Park Service until ownership of it transferred to the federal government — which just happened in July 2024.