Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Blenheim Palace' has mentioned 'Listed buildings' in the following places:
Occurrence Sentence Text Source
Firstly, individual buildings, monuments, gardens and landscapes are designated under the Planning (Listed Buildings and Conservation Areas) Act 1990 and the 1979 Ancient Monuments and Archaeological Areas Act and secondly, through the UK Spatial Planning system under the provisions of the Town and Country Planning Acts.
Forty five key buildings on the site are Grade 1 and Grade 2* Listed Buildings, with the park wall designated Grade 2.