Crises and renewals (17th to 20th century) Crises and renewals - New reform and restoration (17th century) Crises and renewals - Secularisation and reorganisation (18th and 19th centuries) Crises and renewals - Contemporary renovations (18th and 19th centuries) The foundation (5th century) The basilica of Clotild (6th century) The Carolingian reconstruction (9th century) Medieval renovations (11th to 14th centuries) Crises and renewals (17th to 20th centuries)