The High Street runs from Eastgate to West-Out, forming the spine of the ancient town. Cliffe Hill gives its name to the one-time village of Cliffe, now part of the town. The southern part of the town, Southover, came into being as a village adjacent to the Priory, south of the Winterbourne Stream. At the north of the town's original wall boundary is the St. John's or Pells area, home to several 19th-century streets and the Pells Pond. The Pells Pool, built in 1860, is the oldest freshwater "lido" in England. The Phoenix Industrial Estate lies along the west bank of the river and contains a number of light industrial and creative industry uses, as well as car parks and a fire station. A potential regeneration project, "The North Street Quarter", for the area would be the largest in Lewes since the South Malling residential area was developed in the 1950s and 1960s and in the South Downs since it became a National Park.