National park sites draw tourism all across the United States. Although large natural parks see much attention, most national park units are actually designed to protect and interpret unique cultural and historic resources. As an example of this, the National Park Service administers numerous presidential historic sites. However, we know very little about the people who visit them. Understanding visitor motivations to presidential historic sites can help to provide for better visitor experiences of presidential resources. This research uses intercept surveys at the Jimmy Carter National Historic Site in Plains, Georgia, to gain an understanding of visitor motivations. From the results, seven motivation types are identified. The information in this article can be used to better understand public values related to presidential resources, and to help the managers of these resources to improve on-site experiences by addressing visitor motivations.