Several areas of the city were developed in the Stuart period, and more building took place during Georgian times in response to the increasing number of visitors who required accommodation. Architects John Wood the Elder and his son laid out the new quarters in streets and squares, the identical façades of which gave an impression of palatial scale and classical decorum. Much of the creamy gold Bath stone, a type of limestone used for construction in the city, was obtained from the Combe Down and Bathampton Down Mines owned by Ralph Allen (1694–1764). Allen, to advertise the quality of his quarried limestone, commissioned the elder John Wood to build a country house on his Prior Park estate between the city and the mines. Allen was responsible for improving and expanding the postal service in western England, for which he held the contract for more than forty years. Although not fond of politics, Allen was a civic-minded man and a member of Bath Corporation for many years. He was elected mayor for a single term in 1742.