In this city, an 1888 “Universal Exposition” led to the creation of its Castle of the Three Dragons. This city’s Block of Discord includes a building with a roof reminiscent of a dragon’s back (10[1])nicknamed the House of Bones. In this city, 86 Doric columns support a Greek theater at the top of a staircase featuring an example of trencadis (“trung-kuh-DEES”), a multicolored mosaic salamander. (10[2])That park in this city, (10[1])like pavilions that featured a wrought-iron dragon gate, is named for Eusebi Güell (10[1])(“oh-ZEH-bee GWAIL”). This city (10[1])hosts an unfinished structure intended to have (10[1])18 towers that was primarily designed (10[1])by Antoni Gaudí (10[1])(“gow-DEE”). For 10 points, the Sagrada Família (10[1])basilica is located in what largest (10[1])Catalonian city? ■END■