Though earlier Gothic ecclesiastical examples, such as Vicars' Close, Wells are known, the practice of building new domestic homes uniformly to the property line really began in the 16th century following Dutch and Belgian models and became known in English as "row" houses. Terraced houses are distinguished by properties connecting directly to each other in a row, sharing a party wall. A house may be several storeys high, one or two rooms deep, and optionally contain a basement and attic. In this configuration, a terraced house may be known as a two-up two-down, having a ground and first floor with two rooms on each. Most terraced houses have a duo pitch gable roof. For a typical two-up two-down house, the front room has historically been the parlour, or reception room, where guests would be entertained, while the rear would act as a living room and private area. Many terraced houses are extended by a back projection, which may or may not be the same height as the main build. A terraced house has windows at both the front and the back of the house; if a house connects directly to a property at the rear, it is a back to back house. 19th century terraced houses, especially those designed for working-class families, did not typically have a bathroom or toilet with a modern drainage system; instead these would have a privy using ash to deodorise human waste. The Place des Vosges in Paris (1605–1612) is one of the early examples of the style. Sometimes associated with the working class, historical and reproduction terraces have increasingly become part of the process of gentrification in certain inner-city areas.