Notre-Dame-de-l'Osier

Notre-Dame-de-l'Osier
Notre-Dame-de-l'Osier
Commune
	The basilica of Notre-Dame-de-l'Osier
	Location of Notre-Dame-de-l'Osier
	Notre-Dame-de-l'Osier Location within France Notre-Dame-de-l'Osier Location within Auvergne-Rhône-Alpes
	Coordinates: 45°13′59″N 5°24′00″E
Country	France
Region	Auvergne-Rhône-Alpes
Department	Isère
Arrondissement	Grenoble
Canton	Le Sud Grésivaudan
Government
• Mayor (2020–2026)	Alex Brichet-Billet
Area 1	8.38 km2 (3.24 sq mi)
Population (2023)	535
• Density	63.8/km2 (165/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	38278 /38470
	1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Notre-Dame-de-l'Osier is a commune in the Isère department in southeastern France.^[3] It is famous for being the location of a Marian apparition that took place in 1657. A church was built on the site of the apparition and completed in 1858. It became a Basilica following a decree by Pope Pius XI on 9 September 1924. Pilgrimages to the apparition site were very popular during the 19th century and the first half of the 20th century but declined in the past decades. A house of the Missionary Oblates of Mary Immaculate was established in the commune in 1834 and ceased activity in 1997. Up to 11 hotels were active in the town, welcoming pilgrims and tourists, but the last one closed down in 2001, the pilgrimage attracting less and less crowds.