Have you read "The cathedral of the sea"? It's a best-seller written by Ildefonso Falcones. The story takes place in the medieval Barcelona, when Santa Maria del Mar was built.
It is a very impressive church located at "el Born" neighbourhood. In contrast to Barcelona's cathedral, it was property of the neighbours of the area. And you can enjoy it nowadays!
And don't forget to visit "El fossar de les moreres", next to the church.
