The Fort Klamath Museum sits on an eight-acre parcel at the heart of historic Fort Klamath, which operated from 1863 to 1889. No original fort buildings remain on the museum grounds, although the site contains the parade grounds and flagpole site of the fort, as well as the graves of four Modoc Indian leaders who were tried and hanged at the fort after the end of the Modoc Indian War in 1873. A replica of the fort guardhouse contains displays and artifacts of fort history.