Castlefield is an inner-city conservation area in Manchester, North West England. The conservation area which bears its name is bounded by the River Irwell, Quay Street, Deansgate and Chester Road. It was the site of the Roman era fort of Mamucium or Mancunium which gave its name to Manchester. It was the terminus of the Bridgewater Canal, the world's first industrial canal, built in 1764; the oldest canal warehouse opened in 1779. The world's first passenger railway terminated here in 1830, at Liverpool Road railway station and the first railway warehouse opened here in 1831. The Rochdale Canal met the Bridgewater Canal at Castlefield in 1805 and in the 1830s they were linked with the Mersey and Irwell Navigation by two short cuts. In 1848 the two viaducts of the Manchester, South Junction and Altrincham Railway crossed the area and joined each other, two further viaducts and one mainline station Manchester Central railway station followed. It has a tram station, Deansgate-Castlefield tram stop (formerly G-Mex) providing frequent Manchester Metrolink services to Eccles, Bury, Altrincham, Manchester Piccadilly, East Didsbury and Rochdale. Castlefield was designated a conservation area in 1980 and the United Kingdom's first designated urban heritage park in 1982. Toponymy The name Castlefield refers to the settlement's position below the former Roman fort. It is a contracted version of the earlier name Castle-in-the-field. Another name for the area was Campfield, which derived from the same source. It is preserved in the name of St Matthew's Church, Campfield, and Campfield Market. (Manchester also derived its name from the fort.) An older name for the settlement was the Old English Aldport, meaning old or long used port, distinguishing it from the new port at medieval Manchester nearer the confluence of the Rivers Irk and Irwell. Port in Old English could refer to a harbour or a market so the names could be old and new market. History Roman period A Roman fort (), Mamucium or Mancunium was established in what is now Castlefield around AD 79 near a crossing place on the River Medlock. The fort was sited on a sandstone bluff near the confluence of the River Medlock and Irwell in a naturally defensible position. It was erected as a series of fortifications established by Gnaeus Julius Agricola during his campaign against the Brigantes, who were the Celtic tribe in control of most of northern England. It guarded a central stage