From top to bottom: the idea of a square - when you have a rigid ortogonal urban plan nothing seems more logic to me than starting from that. Therefore, the basic concept is to continue the original plan. The second image comes with the need of allowing people to walk though the city, and for it, openning the space looks like a great idea to me. The third image culminates the concept. This because it returns to the main intencion of the concept. In resume, I guess i can say that the 1st one is a construction of the square, the 2nd the desmaterialization of it, and the 3rd the reconstruction of the square. It´s also important to mention that the programme allows me to do this: in the ground floor there´s independent nucleus that work with no interior connection between themself. Those are the administration, the reception and also the treatment area. In the first floor there´s the surgery block and the recovery zone (and all the surounding areas needed).