2000 saw the launch of a vast project spread over 10 years, aimed at restoring the Gothic cathedral of Santa Maria. The visit of the site enables visitors to get a close look at the restoration of the works (the tour varies according to the progress of the restoration work). This entirely new initiative is very interesting. Equipped with a helmet, you will walk along metallic footbridges and discover all the secrets of this fortress-temple. At the same time, you will understand the development and urban plan of the town's historic district.