The Ruins of the Buddhist Vihara at Paharpur contain a Buddhist Monastery dating from the late 8th century. It is located in Paharpur, in the northwest of Bangladesh. It is said to be the second largest single Buddhist monastery south of the Himalayas. It was made a WHS as a tribute to the Pala dynasty, that ruled Bengal and Bihar for 3,5 centuries from the middle of the 8th century.The monastery is built as a quadrangle, measuring 281 meter on each side. All outer four wings contain monastic