Portsmouth Olde Towne Historic District, is a national historic district located at Portsmouth, Virginia. It encompasses 89 contributing buildings. It is located in the primarily residential section of Portsmouth and includes a notable collection of Federal and Greek Revival style townhouses, known as "basement houses." Other notable buildings include the Watts House (1799), Grice-Neely House, Nivison-Ball House, Emanuel A.M.E. Church (1857), Court Street Baptist Church (1901-1903), and Union Machinist Home. Located in the district is the separately listed Monumental Methodist Church.