The patron of Quart is Saint Eusebius, celebrated on 2 August. The parish church dedicated to him has, in its present structure, the form given to it at the end of the 17th century.
Among the other places of worship in the area stands out the hermitage of the Blessed Emerico — Éméric or Ayméric de Quart —, dedicated to the beato who was bishop of the diocese of Aosta in the 14th century. The village is dominated by the castle of the lords of Quart, built around 1180 on a hill and enlarged several times in later centuries: from 1378, with the extinction of the house of the lords of Quart, it passed to the House of Savoy; reopened to the public in 2009 after restoration, it stands in the Villair locality.
