two centuries or so, with long gaps between the different stages: the lowest level was built between 1541 and 1543, the second from 1640 to 1654 (by Tugal Caris), and the fourth (by Pierre Corbineau) from 1654 to 1678. Yet another architect, François Hoguet, completed the towers, between 1679 and 1704, at their present height of 48 metres and added the device of Louis XVI between them.

The nave and choir however had not been