Casa Batlló in the center of Barcelona is one of Antoni Gaudí’s masterpieces. A remodel of a previously built house, it was redesigned in 1904 by Gaudí and has been refurbished several times after that. The local name for the building is Casa dels ossos (House of Bones), as it has a visceral, skeletal organic quality. It was originally designed for a middle-class family and situated in a prosperous district of Barcelona.
Like everything Gaudí designed, it is only identifiable as Modernisme or Art Nouveau in the broadest sense. The ground floor, in particular, has unusual tracery, irregular oval windows and flowing sculpted stone work. There are few straight lines, and much of the façade is decorated with a colorful mosaic made of broken ceramic tiles. The roof is arched and was likened to the back of a dragon or dinosaur.