The most beautiful religious buildings Breuil-Le-Sec

Its nave dates from the Romanesque era (th-century). It was burned in 1798 and remained in ruins until 1850. It was then rebuilt and amended to finally be spent in 1856. There are several primitive windows of the th century, a funeral inscription and a death head indicating the grave of Etienne Goullet, magister of the parish, a Renaissance fresco representing the conversion of Saint Hubert, the drawings of two superimposed frescoes. The stained glass windows were recently redone according to the plans of the old ones.

This chapel bears the name of Saint Arnoult in tribute to the bishop of the same name who lived under the reign of Clovis. This missionary, who carried out numerous pilgrimages between Tours, Poitiers and Reims, was massacred in the Yvelines forest and buried in Saint-Arnoult-en-Yvelines in the th century. The chapel belonged to the Clermont Hospital in 1686, it was destroyed in 1783 but another was raised in the same year a little above the former.