Parc Güell is a good sized park on a hill overlooking much of Barcelona. You can see the harbor, Montjuic, Sagrada Familia, and the expanse of the city. There are lots of Gaudi mosaics and various structures including some treelike columns supporting a roadway. The entrance buildings have typical Gaudi roof structures. There were several musicians playing, an awful singer/guitarist, someone with a huge array of percussion and wind instruments and a fiddler and guitarist in one of the cave-like caverns. One section has a long waving bench covered with mosaics - all different.