The restoration of house no. 325 was a complex process, as the building lacked the foundation, was located on unstable ground and was in an advanced state of decay. The general restoration principle was to keep as much as possible from the original building material. The collapse-risk areas were rebuilt, and the portions maintained were secured.
The biggest challenges were the clayish and unstable ground, as well as the presence of two undergroundsprings. The specialists dug deep to identify the water sources, and collection and drainage systems were subsequently built. Even with this new system, the old walls will continue to eliminate water and salts over the next years.