The Roman-style architecture of the cistern at Bishop Hill came to light during demolition work. The public attention drawn to it made it become a Grade 1 historic building spared from demolition. The incident raised people’s awareness of conservation - why wasn’t architecture of such historic value protected long ago? It turned out that the list of historic buildings compiled by the Antiquities and Monuments Office (AMO) only covered buildings but not stone slabs, steles, water tanks, etc. The incident also revealed a lack of communication among government departments. Moreover, the job of grading all architecture now falls on a five-member AMO expert panel. People believe that the AMO should be more transparent and listen to public opinion by establishing more channels.