The Amphorn Sathan Residential Hall or the Ambara Villa (Thai: พระที่นั่งอัมพรสถาน: Phra Thinang Amphorn Sathan) is a royal mansion situated inside Bangkok's Dusit Palace. It served as the primary residence of the former King Bhumibol Adulyadej (Rama IX) and former Queen Sirikit of Thailand, and was the birthplace of King Vajiralongkorn.