Fort Durham, also known as Fort Taku, Taku, Taco, and Tacouw and in legal terms as AHRS Site JUN 036 is an archaeological site near Taku Harbor, Alaska, within the limits of Juneau City and Borough and Tongass National Forest. It was one of three Hudson's Bay Company (HBC) posts set up in Russian America. The Fort Durham Site was declared a U.S. National Historic Landmark in 1978.