This is a list of lands under federal protection in the U.S. state of California: included here are 9 national parks, 13 national monuments, 1 national preserve, 1 national memorial, 1 national seashore, 2 national historical parks, 4 national historic sites, 1 national grassland, 20 national forests, 4 national recreation areas, 35 national wildlife refuges, 4 national marine sanctuaries, 3 national estuarine research reserves, and parts of 4 national scenic or historic trails.