The Guardian's Trevor Cox has the heritage listed Christchurch Town Hall in his "10 of the world's best concert halls".
http://www.theguardian.com/travel/2015/mar/05/10-worlds-best-concert-halls-berlin-boston-tokyo
“How important is heritage preservation in our cities” Donovan Rypkema (President Of Heritage Strategies) Interviewed On R.N.Z. National Nine To Noon
"Donovan Rypkema is president of Heritage Strategies International, a Washington DC consulting firm. His book, "The Economics of Historic Preservation: A Community Leader's Guide" , is now in its third edition and his firm has had clients including the World Bank, the Inter American Development Bank, the Council of Europe and the United Nations Development Programme. He's in New Zealand as a guest of the Civic Trust Auckland." (Text from RNZ Website)
http://podcast.radionz.co.nz/ntn/ntn-20150313-0931-how_important_is_heritage_preservation_in_our_cities-048.mp3