At the foot of the active volcano Mount Tangkuban Perahu in West Java's Subang region, Ciater is Indonesia's best-known hot spring resort area, centered on the Sari Ater resort. Its volcanic sulfur water is believed by locals to help with skin conditions, making it popular with domestic visitors, and the complex offers both large outdoor family pools and private hot-spring villas. Surrounded by tea plantations and tropical jungle, the resort pairs bathing with outdoor activities like trekking, camping, and ATV rides. It's about 1 to 1.5 hours by car from Bandung, making it a popular day trip or overnight escape from the city.
