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There are 37 Scheduled Monuments in Greater Manchester, a metropolitan county in North West England. In the United Kingdom, a Scheduled Monument is a "nationally important" archaeological site or historic building that has been given protection against unauthorised change by being placed on a list (or "schedule") by the Secretary of State for Culture, Media and Sport; English Heritage takes the leading role in identifying such sites. Scheduled Monuments are defined in the Ancient Monuments and Archaeological Areas Act 1979 and the National Heritage Act 1983. They are also referred to as Scheduled Ancient Monuments. There are about 18,300 Scheduled Monument entries on the list, which is maintained by English Heritage; more than one site can be included in a single entry. While a Scheduled Monument can also be recognised as a listed building, English Heritage considers listed building status as a better way of protecting buildings than Scheduled Monument status.〔 If a monument is considered by English Heritage to "no longer merit scheduling" it can be descheduled. The metropolitan county of Greater Manchester is composed of 10 metropolitan boroughs: Bolton, Bury, Manchester, Oldham, Rochdale, Salford, Stockport, Tameside, Trafford and Wigan. Rochdale has no Scheduled Monuments; those in the other boroughs are listed separately. They range from prehistoric structures – the oldest of which date from the Bronze Age – to more modern structures such as the Astley Green Colliery, from 1908. Greater Manchester has seven prehistoric monuments (''i.e.'' Bronze or Iron Age), found in Bury, Oldham, Salford, Stockport, and Tameside. The Bronze Age sites are mainly cairns and barrows, and both the Iron Age sites are military in nature, promontory forts. The trend of military sites continues from the Iron Age into the Roman period; two Roman forts in Greater Manchester are Scheduled Monuments and were the two main areas of Roman activity in the county. Of the nine castles in Greater Manchester, four are Scheduled Monuments: Buckton Castle, Watch Hill Castle, Bury Castle, and Radcliffe Tower. The last two are fortified manor houses, and although defined as castles were not exclusively military in nature; they probably acted as the administrative centre of the manors they were in.〔Friar (2003), pp. 186–87.〕 There are several other manor houses and country houses – some with moats – in the county that are protected as Scheduled Monuments. The Astley Green Colliery, the Marple Aqueduct, Oldknows Limekilns, and the Worsley Delph are scheduled relics of Greater Manchester's industrial history. {|style="width:100%;border:0px;text-align:left;" |-valign="top" | ==Bolton== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of Scheduled Monuments in Greater Manchester」の詳細全文を読む スポンサード リンク
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