Because of work related to the construction of Metro Line 2 and the acceleration of the sinking of many of the buildings in the historic center, the basic structure of the Palace suffered deterioration, requiring work to secure the building's foundation and supports, especially on the third floor, the central patio and the Patio of Honor. During this work, the old column bases of the Viceroy Palace were found, two of which were restored where they were found. They also found old cedar rafters with their brackets, which were used to form the foundation of the first floor.
