Scheduled monument

In the United Kingdom, a scheduled monument is a nationally important archaeological site or historic building. The schedule legally protects the monument from unauthorised change.
The protection of scheduled monuments is given under the "Ancient Monuments and Archaeological Areas Act 1979". There are about 20,000 scheduled monuments in England.
According to the 1979 Act, a monument cannot be a structure which is occupied as a dwelling, used as a place of worship or protected under the Protection of Wrecks Act 1973.