The church of St Denis (13th and 16th centuries), and the ruins of a castle built by Catherine of Gonzaga, duchess of Longueville, in the early 17th century, are of little importance.
Pippin died on the 24th of September 768 at St Denis, leaving two sons, Charles (Charlemagne) and Carloman.
The result was that in March 834 Louis was restored to power at St Denis; Judith once more returned to his side and the kingdoms of Louis and Pippin were increased.
The terms were, among other things, his appointment to the rich abbacy of St Denis and his restoration to his other benefices with the payment of arrears.
He ran great danger at the estates of Compiegne in May 1358, where his dismissal was demanded, and he had to flee to St Denis, where Charles the Bad and Etienne Marcel came to find him.
