The church dominates the main town from its elevated position.
The parish of Gignod is attested by a bull of Pope Alexander III in 1176. The present church, however, seems to date back no further than the 15th century. Not only the architectural structure of the building, but also some valuable frescoes discovered during restoration work in 1895 date from this period. The bell tower was built between 1481 and 1485 by a master builder from Gressoney, Yolli de Vuetto, who had just completed the bell tower of the nearby parish of Etroubles.
Noteworthy are the 15th century frescoes, including a deposition. A beautiful stained-glass window dating back to the 16th century and originally placed on the façade of the church, consists of a coat of arms of the lords of Avise in a circle around which are four other roundels depicting Saint Hilary, patron saint of the parish, Saint Nicholas and Saint Catherine. There is also an inscription recalling the commissioners of the work, Stefano d’Avise and his wife Pernette, who lived in the 16th century.
