Fort Shafter is a census-designated place located in the City and County of Honolulu, Hawai‘i. It is the headquarters of the United States Army Pacific, which commands most Army forces in the Asia-Pacific region with the exception of Korea. Geographically, Fort Shafter extends up the interfluve (ridgeline) between Kalihi and Moanalua valleys, as well as onto the coastal plain at Māpunapuna. A portion of the area is also known as the Palm Circle Historic District; it is listed on the National Register of Historic Places and has been further designated as a U.S. National Historic Landmark. It is also known as Palm Circle or 100 Area.