Laird Cottage in Demopolis, Marengo County, is a nineteenth-century house museum run by the Marengo County Historical Society. Constructed in the 1870s, the home was purchased in November 1914 by local dentist Marcellus Laird, for whom it is currently named. After Laird died in 1918, the building went through various owners until it was bequeathed to the Marengo County Historical Society in 1993. It has since served as the headquarters of the Marengo County Historical Society as well as the official Geneva Mercer Museum, which celebrates nationally and internationally acclaimed Alabama sculptor and painter Geneva Mercer, who spent her final years in Demopolis.

Geneva Mercer (1889-1984), also of Jefferson, was Dora Mercer's sister. From an early age, she exhibited immense talent for sculpting. After enrolling at the State Normal School (present-day University of West Alabama), Mercer studied art professionally and her talents were noticed by school president Julia Tutwiler, who arranged to have her apprentice with famed Italian sculptor Giuseppe Moretti. He designed Vulcan in Birmingham, the largest cast iron statue in the world, and created other notable works from Sylacauga marble.

In her later years, Mercer returned to Demopolis to live out her final days, next door to her niece Libby. There, she painted and wrote verse and continued to sculpt. By the time of her death in 1984, she was one of Alabama's most notable artists and the first Alabama artist to have all her works documented by the Smithsonian Institution. Mercer was inducted into the Alabama Women's Hall of Fame at Judson College in 1989.
In 1993, Libby Laird bequeathed Laird Cottage to the Marengo County Historical Society and died that same year. The cottage is now the official headquarters of the historical society, which was organized in 1961 and which owns nearby properties that include Bluff Hall and Lyon Hall. The society's mission is to gather, collect, preserve, study, and publicize both the facts and artifacts of the history of Marengo County.
Laird Cottage is located at 311 N. Walnut Ave. It is open to the public by appointment only.