page_title: Scheduled monuments in Greater Manchester
section_title: Wigan
hierarchical_section_title: Scheduled monuments in Greater Manchester / Wigan
caption_attribution_description: English: Bridgewater Canal and Disused Astley Green Colliery The colliery is closed, but the pithead is the last surviving in the whole of the Lancashire coalfield.
context_page_description: 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 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.
caption: Astley Green Colliery's pithead, viewed from across the Bridgewater Canal
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