If you want to look at Gaudi's great works, but also worry about the aesthetic fatigue of the church, home or something, Guer Park is a good choice. It has a moderate size, a strange design, and a good view far and near. What impressed me most was that there were two fantastic fountains on the stone steps at the intersection. One was the chameleon, the patron saint of Catalonia. Another is Catalonia's giant lizard with a badge. It also has the longest seat in the world. It's very, very interesting.