Montjuïc Castle is a fortress in Barcelona that dates back to the 17th century. And it has been involved in both the defense of Barcelona and its repression – repeatedly, over the course of centuries.
Research:

SYMHC Classics: Penicillin
42:45

Behind the Scenes Minis: Dorothy Everywhere
20:00

Dorothy Crowfoot Hodgkin’s Crystalline Chemistry, Part 2
43:14