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
Religion in Indonesia urbanised Balinese attracted to cities in Java, especially the Greater Jakarta area. Central Kalimantan has a 15.8% Hindu population. The Hindu variant of Kalimantan is identified as Hindu Kaharingan, although this native Dayak belief may be more correctly categorised as Animism, rather than Hinduism. Sikhs are typically registered as Hindus because the Indonesian government does not recognise Sikhism as a religion. Buddhism is the second oldest religion in Indonesia, arriving around the sixth century. The history of Buddhism in Indonesia is closely related to the history of Hinduism, as a number of empires based on Buddhist culture were established around