Taiwan is unofficially represented in Australia by the Taipei Economic and Cultural Office in Canberra (which has branches in Sydney, Melbourne and Brisbane) while Australia is similarly represented by the Australian Office in Taipei. Taiwan has an official, government co-sponsored branch office of Taiwan External Trade Development Council in Sydney. The Australian Consulate-General in Hong Kong is responsible for Visa and Citizenship matters for applicants in Taiwan. Perth has sister city relations with Taipei City and Brisbane has sister city relations with Kaohsiung City.