Things we've noticed:
There are kind of a lot of twins. They (and even just siblings) are often dressed the same.
Hardly anyone wears sweatpants at all.
There aren't many sidewalks, cars often drive by within a foot.
We've seen cars parallel parked side by side and were told that the outer cars leave them in neutral so if the inside needs to leave they can push it out of the way. I want to see that.
There are "bike" lanes on many streets.
People often just sit down on a bench or stairs and hang out and chat. Most things are slower paced and relaxed. They often leisurely walk through the streets.

We went to a bar last night and saw a small flamenco show. There was just one dancer but it was pretty cool. We had Sangria and it was pretty good. We rented bikes today. They have a system where you get a bike for half an hour and then can return it to a different station, wherever you are going.
~Morgan