The Phra Thinang Amarin Winitchai Mahaisuraya Phiman (พระที่นั่งอมรินทรวินิจฉัยมไหสูรยพิมาน) or, in brief, thePhra Thinang Amarin Winitchai (พระที่นั่งอมรินทรวินิจฉัย) is the northernmost and forward building of the Maha Monthien buildings, It is also perhaps the most important. The throne hall was constructed in Thai style as a royal audience chamber, for receiving foreign ambassadors and for conducting important state businesses and ceremonies The exterior of the Phra Thinang Amarin Winitchai