Indonesia a rich cultural heritage that reflects Indonesia's dynamic history and ethnic diversity. Indonesia has a well-preserved natural ecosystem with rain forests that stretch over about 57% of Indonesia's land (225 million acres). Forests on Sumatra and Kalimantan are examples of popular destinations, such as the Orangutan wildlife reserve. Moreover, Indonesia has one of world's longest coastlines, measuring . The ancient Prambanan and Borobudur temples, Toraja and Bali, with its Hindu festivities, are some of the popular destinations for cultural tourism. Indonesia has 8 UNESCO World Heritage Sites, including the Borobudur Temple Compounds and the Komodo National Park; and a further
Indonesia million by 2050. Around 8 million Indonesians live overseas, with most of them settled in Malaysia, Netherlands, Saudi Arabia, United Arab Emirates, Hong Kong, Singapore, United States, and Australia. Indonesia is a very ethnically diverse country, with around 300 distinct native ethnic groups. Most Indonesians descend from Austronesian-speaking peoples whose languages can be traced to Proto-Austronesian, which possibly originated in what is now Taiwan. Another major grouping are the Melanesians, who inhabit eastern Indonesia (Maluku Islands and Western New Guinea). The Javanese are the largest ethnic group, comprising 40.2% of the population. They are predominantly located in the central to