It was commissioned by businessman Pere Milà i Camps and his wife Roser Segimon i Artells , from Reus and widow of the wealthy Indian Josep Guardiola i Grau. At the time it was very controversial because of the bold undulating stone facade and twisted wrought iron that decorate the balconies and windows, designed mostly by Josep Maria Jujol, who also designed some of the skies of plaster.
Architecturally it is considered an innovative work by having a structure of columns and floors free of load bearing walls. Similarly, the front – which is made of stone – is also self-supporting, ie, not loads of floors. Another innovative element was the construction of the underground garage.
The year 1984 was declared a World Heritage Site by UNESCO . It is currently the headquarters of the Fundació-Catalunya La Pedrera , which manages the various exhibitions and activities done there and the public visits.