Allos (French pronunciation: [alɔs]; Occitan: Alòs) is a commune in the Alpes-de-Haute-Provence department in the Provence-Alpes-Côte d'Azur region of southeastern France.

The commune experienced a significant rural exodus in the 19th century, following the population movement of the department.

Then the town was overwhelmed for eighty years by winter sports: the construction of accommodations and ski-lifts has changed the landscape and the mountain urbanisation.

Historically Allos, located in the valley of the Verdon, has long been linked to the Ubaye Valley: first at the time when Ubaye belonged to the States of Savoy (from 1388 to 1713) then after it became part of France it continued to be administered across the Col d'Allos (impassable in winter).

Located at the edge of the Mercantour National Park, the country of Upper Verdon and the Allos valley offers landscapes of great beauty: from the famous Lac d'Allos (Allos Lake) which is the largest mountain lake in Europe to the waterfall of La Lance, near Colmars-les-Alpes.

The flora is rich and varied depending on the altitude: larch, spruce, fir as well as Alpine clematis, peonies, and Martagon.

The commune is in zone 1b (low risk) according to the deterministic classification of 1991 and based on historical earthquakes.

[10] [11] The locality appears for the first time in texts from 1056 under the name of ad Alodes which means Allods in Occitan.

[18] At the end of the Roman Empire the upper valley of the Verdon depended on the civitas and the bishopric of Thorame.

[26] The peculiarities of the Allos community, which occupies several deep valleys and whose habitat is dispersed across multiple villages, led to the creation of three parishes in the 17th century: one in La Foux, one in Bouchiers, and one in Baumelle.

[34] Allos is a high mountain commune whose main resource is tourism - hiking in the summer - but especially winter sports.

[35] Most of the survey data from the Ministry of Agriculture are subject to statistical secrecy which indicates low numbers and extent of cultivated land.

[37] In late 2015 the secondary sector (industry and construction) had 29 establishments mainly crafts (24 companies with no employees).

There is also a very large number of items registered as historical objects located at:[45] There are still remnants of medieval structures: Examples of later structures registered as historical monuments: The churches and rural chapels are in a simple alpine style imposed by the climate.

The extent of the commune with its large population the 19th century, when the parishes and their branches were under the Concordat plan, made communications difficult due to the terrain and snow in winter.

[53] It is built in Brickwork in a regular way with a chevet made of a single semicircular Apse, vaulted in cul-de-four.

Raymond Collier identifies several characteristics of Notre-Dame-de-Valvert different from the communal type of alpine Romanesque: It was damaged at the beginning of the 17th century and again in 1697 by the war: the second time the Savoyards caused the collapse of the tower.