The very old university in Alcala de Henares. It was founded in the 1400's!
This is where they give the Miguel de Cervantes literary award every year for the written word in Spanish. There is a list of all the winners since the award was started in 1976. (notice how the winners are from Spanish-speaking countries, not necessarily Spain)
If you are a writer and you write in Spanish, coming to this place for an award is the crowning achievement of your career.