Cape Cod has a wealth of historic resources, from its buildings and historic villages to its cultural landscapes and archaeological sites. Thousands of Cape buildings are listed on the National Register of Historic Places or located in one of the region's 22 local and regional historic districts. Many more historic properties have not yet been inventoried or protected. The Cape Cod Commission works to preserve the important historic and cultural features of the Cape landscape and built environment through a variety of means, including technical assistance, regulatory review of projects impacting historic resources, and educational programs.