MACAU tourism officials are optimistic over the future of tourism in the Portuguese enclave, and have launched a drive to attract more international visitors. Mr Salavessa da Costa, Macau's Under-secretary for Communications, Tourism and Culture, said 7.9 million travellers visited Macau last year, a 3.7 per cent rise on 1991. Hongkong visitors dominated the figures at about 70 per cent, with the majority of the remainder also coming from Asian nations. Of other Asian sources of tourists, Taiwan visitors increased 47 per cent, South Koreans by 13.4 per cent, and mainland Chinese numbers were up a massive 128 per cent compared with 1991. Mr da Costa said Macau was improving facilities to meet the increasing number of visitors, with the new outer harbour maritime terminal and tourism centre to be completed later this year. The tourism centre will offer large convention halls for international meetings. The tourism department has staged promotion campaigns in Tokyo, Seoul, Taipei, Guangzhou and other cities to attract more visitors.