Olympic National Park is located in the U.S. state of Washington, in the Olympic Peninsula. The park can be divided into three basic regions: the Pacific coastline, the Olympic Mountains, and the temperate rainforest. U.S. President Theodore Roosevelt originally created Mount Olympus National Monument in 1909 and after Congress voted to authorize a re-designation to National Park status, President Franklin Roosevelt signed the legislation in 1938. In 1976, Olympic National Park became an International Biosphere Reserve, and in 1981 it was designated a World Heritage Site. In 1988, Congress designated 95 percent of the park as the Olympic Wilderness.