We thought it would be a good idea to group some of Barcelona's medieval and gothic sites into a single morning or afternoon, in order to better appreciate the architecture and get a sense of the times. The Cathedral, Palau Reial Major, and Santa Maria del Mar have bubbled to the top within close proximity to each other. Any other surviving examples of medieval buildings, squares, statues, etc. within a nearby (1 mile-ish) radius? (I didn't include Basílica de Santa Maria del Pi, only because it seemed like it was mostly a modern reconstruction, but maybe I've read that wrong).
Later we'll probably visit Sant Pau del Camp and other sites further afield.