Archibald McAllister House, now officially known as Fort Hunter Mansion, is a historic home located on the Susquehanna River approximately 6 miles north of downtown Harrisburg, Dauphin County, Pennsylvania. It consists of a 2-story, 2-room stone "cabin' built in 1787, to which was added in 1814 a 2 1/2-story, five-bay wide stone dwelling in the Federal style. The mansion has an overall "T"-floorplan, with the 2 1/2 story 1814 addition in front and the original 1787 cabin and an attached, woodframe summer kitchen built in the mid- to late-19th century to the rear. The mansion features a front portico with Tuscan order columns above which is a Palladian window on the second floor. The entry door has a semi-circular fanlight and sidelights with thin wooden ribbing.