Architecturally it is considered an innovative work but at that time it was subjected to ridicule and disgust.
In 1984, it was declared World Heritage by UNESCO.
Its limestone facade with the cave-like balconies comes off as cut off one single white rock.
There are large windows and iron balconies set into the undulating facade.
All of the apartments overlook two courtyards designed by Gaudi to allow sunlight into the living spaces.
The attic features an exhibit of Gaudis many creations complete with scale models.
Sources:Wikipedia,BCN.travel,Gothereguide,