The oldest ancient vestige in Chambéry is the Saint-Pierre church of Lémenc, largely of the fifteenth century, but which houses an older crypt. Its date and its destination are very poorly known. A rotunda made up of six remarkable columns might have served as a monumental reliquary or a baptistery. The archaeologists do not agree on its dating (ninth or eleventh century).
The neighboring cemetery houses the bodies of several Chambérian celebrities, such as Madame de Warens, the close friend of the philosopher Jean-Jacques Rousseau, or Benoît de Boigne.