Yesterday, we took a funicular (not pictured, unfortunately) and a cable car up to the Monjuïc Castle fortress. It's an impressive structure with excellent views of the city and there's an active park on the surrounding grounds, but it has a dark history. On multiple occasions, its cannon have been turned on the city below to administer collective punishment for resistance to the crown in Madrid. The fortress has also been the site of numerous atrocities. Look up the Bombardment of Barcelona (1842) for example.
Went for a little 4k run between my hotel and the Magic Fountain of Montjuïc. I even spotted some green Monk Parrots, the same as we have back home. They're actually native to South America, but have been introduced to at least two continents, without becoming disruptive to the local ecosystems. One of the first things I noticed when we arrived was their distinctive call, welcoming us. You know, if they can make a home here maybe I can, too, someday.