For thousands of years the valleys, prairies, mountains, and plateaus of the inland northwest have been home to the Nimiipuu or Nez Perce people. Explore these places. Learn their stories. Treat them with care. The 38 sites of Nez Perce National Historical Park are scattered across the states of Idaho, Oregon, Washington and Montana and have been designated to commemorate the stories and history of the Nimiipuu and their interaction with explorers, fur traders, missionaries, soldiers, settlers, gold miners, and farmers who moved through or into the area.