Kuala Lumpur on (Peninsula) Malaysia is home to the Petronas Towers, once the world's tallest building but also some great Moorish architecture.
Kuching (meaning Cat) in Sarawak on Borneo is home to some great old colonial architecture, a fabulous market area, nice water front promenade and not far out of the city Semonggok Wildlife Reserve (for Orangutans) and the Sarawak Cultural Village, a living museum of the cultural diversity - Bidayuh, Iban, Penan, Orang Ulu, Melanau, Malays and Chinese.