Fundació Antoni Tàpies
The Fundació Antoni Tàpies has some major works by Tàpies’ on display, the temporary exhibition of the time of my visit was the incredibly insightful photography series by Susan Meiselas documenting the Nicaraguan war. The museum has an app with lots of supplemental materials for some exhibitions, so don’t forget your headphones and ask ask for the app, it was free at the time of my visit.
More information on the museums website.