This collection of three routes forms a fairly complete collection of the most beautiful enclos paroissieaux in Basse-Bretagne.

The enclos paroissial (trans. parish enclosure) is the most characteristic and usually also the most monumental group of buildings in the towns and villages of Breton, especially in Basse-Bretagne. It is a walled domain, in which the cemetery (nowadays almost exclusively in small villages), the parish church, the ossuary and the Calvary are located. The enclos paroissial could best be described as the parish yard. The triumphal arch is decorated with religious reliefs. It owes its name to the belief that the deceased, by entering eternal life, triumphs over death. For this reason, he must cross the threshold to his final resting place via a triumphal arch. These gates, which are always made with the greatest artistic care, in some cases, as in Sizun and Berven, have three passages, like the great Roman triumphal arches. In the (former) cemetery stands the Calvary, a sculptor's work of art that harks back to simple roadside crosses dating from before the 10th century.
Almost every village along the route takes part in the parade and crosses and calvaries can be found scattered throughout the countryside.