Carol - you are correct

Casa de las Conchas (House of Shells) was built around 1500.
The builder was a Knight in Order of Santiago de Compostela
The shells are symbols of the Order - There are 300+ on the building.
He was also a professor at the University of Salamanca, which is the third oldest in the world.

Also where I attend a summer program in 1972 that changed my life.
If you are bored here is a rewind our blog returning to city 40+ years later Por Fin Volvemos

I am going to have to stop using blog pics....

You are up Carol!