Known as La Pedrera, the Quarry House, Casa Mila is the last house Gaudi designed before starting work on the Sagrada Familia. Casa Mila's nickname is fitting as the building resembles a beautiful, sculpted piece of rock. The facade of Casa Mila is made up of curving stone with no right angles whatsoever. To create this effect, stonemasons attached large stone slabs to the exterior of the building, before sculpting them to create a unique, fluid effect.
Casa Mila was built for Pere Mila i Camps and his wife, Roser Regimon who asked Gaudi to build them a house on the Passeig de Gracia like no other. The Eixample district was already known for its outstanding examples of Modernisme design so Gaudi made sure Casa Mila was something brand new. The house was completed in 1910 and Pere and Roser moved in in 1911. When Pere died in 1946, Roser sold the house and moved out.