Spanish (predominantly the Castillian dialect), Galician, Catalan, Basque.
Euros.
1L of water is around 0.5 euro or 0.60 USD.
A truffle-flavored pizza. While not a traditional Spanish food, it was quite different! I've never tried truffle in any form before, and it was pretty good.
I discovered the spanish artist Ruzzi, who produces songs mostly in the pop and indie genres. My favorite of their songs is "Cuando."
Playing Catan at a board game cafe! Lots of good food and company.
I read part of the play "Don Juan Tenorio" by José Zorrilla for my Spanish literature class. It is one of the most broadly referenced pieces of Spanish literature, and Zorrilla is considered one of the greatest Spanish writers. (Fun fact, some of the golden street inscriptions in Madrid are quotes from Zorrilla.)