Mount Aventine is a farm complex and national historic district located along the Potomac River in Bryans Road, Charles County, Maryland. The complex includes the main house; a second-quarter 19th century Greek Revival-influenced brick house. It was enlarged about 1860 to its present five-bay, center-passage,  2 1⁄2-story appearance. Also on the property are a 19th-century frame smokehouse, the site of another 19th-century house complex, late-19th /early-20th-century agricultural outbuildings, house and dairy barn complex built about 1900, historic roadbeds, a family cemetery, and sites of a 19th-century fishery and an 18th-century house.