n 1811 a fire destroyed the towers and roof of the cathedral. In 1828-29 the roof was replaced and the towers were rebuilt from the ground up. The marble floor in the choir was added in 1852. In 1884-86 the west window was reglazed and a new organ was built by F. Goll of Lucerne. Between 1921 and 1926 the entire church was completely renovated. The interior was completely cleaned, some of the plaster was removed from the walls, the altars were restored and the crypt floor was excavated. About a decade later, in 1937-38, another organ was added by Franz Gattringer of Horn in the Canton of Thurgau. For the rest of the 20th century a museum was added in the crypt and additional repairs, cleaning and renovations continued. For about six years, beginning in 2001, the cathedral was completely renovated and new organs replaced the Goll and Gattringer organs.