This small square leading off the old Calle Libreros is surrounded by typical monuments in the Salamancan Plateresque style. It is home to the university, founded in 1218 and which boasted 7 683 students in 1568 (30 000 in 2007), a record for the time. Once through the majestic doorway and Gothic entrance hall, you reach the patio. Inside, admire the great hall hung with tapestries from Brussels where official ceremonies were held. On the first floor, the Baroque library, renovated in the 18C, contains over 40 000 books.