Two of the most representatives are:
The 'Plaza Mayor': It is the biggest square of the city. It was started in 1729 by Alberto Churriguera and it was built in several phases up to 1755 that was finished.
It is full of medallions with the kings of Spain and historical people all over its perimeter.
Here you have the front of the University of Salamanca. This University is the oldest in Spain and the third oldest in Europe. Its foundation is dated in 1218 by the king Alfonso X 'The Wiseman'.
During this holidays I was in Salamanca visiting my family.