The Ronald Reagan Presidential Library is located in Simi Valley, California. It serves as the official presidential library for Ronald Reagan, the 40th President of the United States, who served from 1981 to 1989. The library features exhibits on Reagan's life, presidency, and significant events during his time in office, including the Cold War and economic policies. In addition to archival materials, the library houses the Reagan Air Force One, the aircraft used by Reagan during his presidency. Visitors can explore various artifacts, photographs, and documents that provide insight into Reagan's legacy and the history of the era.