|Santa Maria del Mar|
I also went to the Labyrinth Park (again). It's a beautiful place, and a little more off the beaten path. It is the oldest "historical garden" in the city (first construction started in 1791). The park was owned privately until 1967, and was opened to the public in 1971. No more than 750 people are allowed in at the same time. If you're ever in Barcelona, I highly recommend a visit.