There are several Australian sites on the World Heritage List. When in Sydney for Congress stay an extra day or two so you can visit the Sydney Opera House that was inscribed on the World Heritage list in 2007.
Read all about it here: http://www.environment.gov.au/heritage/places/world/sydney-opera-house
Consider an Opera House tour while you are in town. https://www.sydneyoperahouse.com/visit-us/tours-and-experiences/english-tour-1718.html.
Read all about it here: http://www.environment.gov.au/heritage/places/world/sydney-opera-house
Consider an Opera House tour while you are in town. https://www.sydneyoperahouse.com/visit-us/tours-and-experiences/english-tour-1718.html.
