Sepia-tinted postcard showing a view of the Chepstow Castle dell. Pencil: [personal message] [address in Hassockssupplied]. Chepstow Castle was originally constructed beginning in 1067, damaged during the civil war, and abandoned to dereliction after 1685. In the 19th century the castle precincts were used for flower shows and other entertainments; in the 20th, it was preserved and repaired as an ancient monument. Little information has been found about the development of the dell as a public open space