ABSTRACT
In 2007–2008 the consolidation of the main church walls of “La Cartuja de Vall de Christ” was undertaken. This paper will analyse the reconstruction of the upper section of the main walls and all of the back part of the sanctum walls and the back wall behind the apse. The walls were made of concrete masonry and had deteriorated over time, so first it had to be consolidated before the reconstruction started. The project team decided to do it according to the original, so it was necessary to look for the clues that told how to do it. The conclusions will try to explain that although it is amazing to work on a very special building it is a big responsibility to do it properly.
