The airial, sometimes described as a sort of oasis in the Landes desert, is the incarnation of "Landes happiness". Amidst the majestic oaks, it is the basic element of the urbanisation of small groups of dwellings which sometimes develop in an arc around the initial airial. Solidly set on the moor, the roof often descends very low to the west to limit the impact of the maritime winds. The Petit airial is an example of a construction in this coastal area with wealthy houses, with the half-timbering filled in with mortar and bricks laid at an angle.