Liddington Hill is an English national monument located in Swindon. It is considered a national heritage site alongside the Liddington Castle, and was first listed a such in 1925. It was designated with this importance because of its archaeological potential to increase “understanding the transition between the Bronze Age and Iron Age.” Specifically, Liddington Hill and Liddington Castle have the potential to provide “archaeological and environmental evidence relating to its construction, the economy of its inhabitants and the landscape in which they lived” (Historic England).