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
Demographics of Indonesia Indonesia is the world's most populous Muslim-majority nation; almost 87.18% of Indonesians declared themselves Muslim in the 2010 census. 9.87% of the population adhered to Christianity (of which more than 70% were Protestant), 1.69% were Hindu, 0.72% Buddhist, and 0.56 of other faiths. Most Indonesian Hindus are Balinese and most Buddhists in modern-day Indonesia are Tionghoa. Indonesian is the official language but there are many different languages native to Indonesia. According to Ethnologue, there are currently 737 living languages spoken in Indonesia, the most widely spoken being Javanese. A number of Chinese varieties, most prominently Min Nan, are also spoken.