About 9.5 million people live in Jakarta, Indonesia's capital city. The entire population of Indonesia is 240 million. Jakarta is located on the island of Java in the Indian Ocean. The country's other main islands include Sumatra, Borneo, Sulawesi and New Guinea. Jakarta offers a fascinating mixture of various cultural influences. In the old town, always worth a visit, are colonial structures from both the Dutch and Portuguese periods. The National Monument, topped by a golden "flame", rises to 140 meters over Merdeka Square. The Jalan Surabaya antique market is interesting as are the many batik factories in the Karet quarter. Rice, coffee and tobacco are cultivated on the fertile island of Java. However, there are also still a few areas where jungle remains as well as mangrove swamps, active volcanoes and crater lakes. The numerous temple complexes on Java provide evidence of the eventful pre-colonial cultural history. The most significant sacred buildings are the Buddhist Temple of Borobudur and the Hindu Temple of Prambanan.