Founded in the 5th century CE in Bihar, India, Nalanda University was among the world's first residential universities. It accommodates 2,000 teachers and more than 10,000 students.
Nalanda had one of the world's largest ancient libraries, Dharmaganja with three buildings, the tallest being nine stories high.
It attracted students and scholars from across Asia, including Japan, China, Korea and Tibet making it an early international university.
The university offered a wide range of subjects including grammar, theology, logic, medicine, mathematics, metaphysics and astronomy.
The campus had a well-organised layout comprising lecture halls, libraries, dormitories and scenic lakes and parks. The structures were constructed using red bricks which showcased advanced architectural design.