The renovation of a building in this city featured a change in a stripe of floral tiles from alternating to uniform positions marked by a checkered white-and-green vertical stripe. A house in this city with an arched roof was built on its “Block of Discord” (15[2])and is called the (15[1])“House (15[1])of Bones.” (15[1])Wrought (15[1])iron balconies (15[1])adorn a house in this city (15[1])whose rough facade led to its nickname the “Stone Quarry.” Buildings in this city that feature the (*) Modernista style of architecture include the Casa Milà. An architect was inspired by Dürer’s Melencolia I to feature a magic square in a cathedral in this city with 18 spires. (10[1])Façades named for Nativity, Passion, and Glory are featured in that as-of-yet unfinished cathedral in this city. For 10 points, name this city home to the Sagrada Família designed by Catalan architect Antoni Gaudí. ■END■