The area I was staying in was Gracia and I spent a lot of time wandering about the neighbourhood. These fresh eggs were by the market, the roof of which is featured below.
Loved the buildings, the signs, tiles, and typography.
One of my favourite things were the entrance of apartment buildings. There were a lot of mid-century murals or brick, tiles, glass. Incredible. Only they photographed really badly so just keep your eye's peeled if you're there for them.