Nalanda University: we mention it so often in Tibetan Buddhism. BBC says, “More than 500 years before Oxford University was founded, India’s Nalanda University was home to nine million books and attracted 10,000 students from around the world.”
Read the brief but informative article here. There a handful of awesome photos, too, showing the remains of the buildings.
You may need to create a BBC free account. I did. It took less and one minute.