Bluff Hall in Demopolis, Marengo County, is a house museum and popular Alabama tourist attraction. Dating from the 1830s, it showcases nineteenth and early twentieth century antiques and furniture along with an extensive clothing and textiles collection. Bluff Hall is considered one of Alabama's most impressive Greek Revival river mansions.

The house remained in the Lyon family until 1907, when it was purchased by A. R. Smith. The Smith family maintained the residence until the 1940s and divided it into rental apartments. The Marengo County Historical Society (founded in 1961) purchased the home in March 1967 with the intention of converting it into a historic house museum.
The location of the home is near the landing site of French expatriates who, in 1817 established the Vine and Olive Colony around present-day Demopolis. The physical location is called White Bluff for the limestone cliff upon which the home sits overlooking the Tombigbee River, one of the major rivers comprising the Mobile River Basin.

The initial stages of the house were constructed in 1832 by enslaved African American labor, forming the L-shaped section of the house that faces east. The original portico of the home was designed in the Federal style. The second phase, which occurred in the late 1840s, added a west wing and a new two-story portico with six square columns in the Greek Revival style. This formed the present layout of house. Part of this addition also included a dining room, butler's pantry, two bedrooms, and the kitchen. There was a one-foot-thick firewall separating the kitchen from the rest of the house. The home's cellar was built by enslaved African American Peter Lee, a craftsman who later bought his freedom with income from outside work, according to a historical society official.
A combination of materials was used in the home's construction. The exterior and interior walls are brick, with the exterior being covered in plaster and painted white. The bricks used were baked in kilns on the home's grounds. The columns are covered with plaster and form the facade of the home. The north half of the rear west wing is made of lumber, with overlapping boards, that was felled and hewn by slave labor.
The main ornamental features of the interior are the Corinthian columns located in the drawing room. The dining room also has elaborate crown molding with a border of grapes and grape leaves at the top of the ceiling. The marble mantles in the dining room are made of Italian black marble. The kitchen contains a large fireplace, with a double flue. Gates, fencing, and outbuildings, including a carriage house and outhouse, have been removed over the years, though some foundations had been visible.

A log cabin that sits on the property was found within the walls of a local Victorian-era home during its demolition. The historical society dated the cabin to the original French expatriates, and combined efforts both saved the cabin and moved it to the grounds of Bluff Hall. Architectural historians with the HABS noted that Bluff Hall once stood on a large amount of acreage but now sits closely to a paved street.
Bluff Hall is located at 407 North Commissioners Avenue. It is open Tuesday through Saturday from 10:00 a.m. to 5:00 p.m. and on Sundays from 2:00 p.m. to 5:00 p.m. There is an admission fee. Nearby in Demopolis are Laird Cottage as well as Lyon Hall and Gaineswood, two other noted antebellum plantation houses.