6. University of Cambridge

In the sixth place is University of Cambridge, UK.

Established in 1209, it is also one of the oldest universities in world.

It has an annual enrollment of about 18,000 students.

Cambridge alumni have excelled in all walks of life with 61 of them being Nobel laureates.

Among its other notable alumni also include eminent Indians like journalist Karan Thapar and economist Amartya Sen.