 There is also a range of Colonial Revival houses, from craftsman era rustic cottages to more formal Georgian, and mass-produced Dutch Colonial models from the early 20th century.The area developed originally in the 19th century as a summer community and early commuter suburb for prominent Baltimoreans.With the opening of the Thomas Viaduct in 1836, the Patapsco Valley south of the river was easily accessible to Baltimoreans.