Langkawi, officially known as Langkawi, the Jewel of Kedah, is a duty-free island and an archipelago of 99 islands located some 30 km off the coast of northwestern Malaysia and a few kilometres south of Ko Tarutao, adjacent to the Thai border. Politically, it is an administrative district of Kedah, with Kuah as its largest town. Langkawi was developed as a t…Langkawi, officially known as Langkawi, the Jewel of Kedah, is a duty-free island and an archipelago of 99 islands located some 30 km off the coast of northwestern Malaysia and a few kilometres south of Ko Tarutao, adjacent to the Thai border. Politically, it is an administrative district of Kedah, with Kuah as its largest town. Langkawi was developed as a tourist destination in the 1980s, and Pantai Cenang is the island's most popular beach and tourist area.