Traditionally, Manx coastal towns and villages developed as farming, fishing, administrative, and religious centers. In addition, isolated farmsteads were established in the interior agricultural lands. Today, the population is predominantly urban, residing in the four principal towns of Douglas-Onchan, Castletown, Ramsey, and Port Saint Mary-Port Erin. Smaller towns are expanded villages serving as parish administrative and economic centers. Ramsey, the largest town in the north, was partially razed to make room for Modern dwellings intended for New Residents. Houses are ideally two-storied, thick-walled, wood-frame structures with interior chimneys, stucco exteriors, and tile roofs. Newer construction employs a diversity of modern building materials and can include apartment or condominium dwellings.