Nalanda is the site of an ancient center of higher learning in Bihar, India. At its peak it accommodated over 10,000 students and 2,000 teachers. The university was considered an architectural masterpiece, and was marked by a lofty wall and one gate. Nalanda had eight separate compounds and ten temples, along with many other meditation halls and classrooms. On the grounds were lakes and parks. The library was located in a nine storied building where meticulous copies of texts were produced. The subjects taught at Nalanda University covered every field of learning, and it attracted pupils and scholars from Korea, Japan, China, Tibet, Indonesia, Persia and Turkey. Nalanda was ransacked and destroyed by Turkic Muslim invaders under Bakhtiyar Khalji in 1193. The great library of Nalanda University was so vast that it is reported to have burned for three months after the invaders set fire to it, ransacked and destroyed the monasteries, and drove the monks from the site.