Sumatra is one of the largest islands in the world and is part of the Indonesian archipelago. It lies to the west of Java and south of the Malay Peninsula. Sumatra is home to a diverse range of cultures and is known for its wildlife and natural beauty, including rainforests, beaches, and volcanoes. The island is an important center of trade and commerce in Southeast Asia, with its major cities including Medan, Palembang, and Padang.