"In 1137, the Count of Ponthieu, Guy II, called upon the monks of Cîteaux who settled in 1158 in Valloires, on the gentle slope of a sheltered hillside.
The abbey first experienced a period of great prosperity, with a rural estate of several thousand hectares divided into about ten barns, some of which still exist, surrounded by their lands.
From the 14th to the 17th century, the history of Ponthieu, with wars and pillaging, accompanied by a certain spiritual and moral disorder, led to its decline.
In the 17th century, several fires ravaged the monastery, but history has its surprises.
The commendation, generally unfavorable to abbeys, was beneficial here. All the commendatories of Valloires were ecclesiastics.
Under Jean Martineau, the monastic buildings and those of the entrance courtyard were rebuilt in much the same way they still are. However, the hasty repairs to the church caused the bell tower to collapse on the abbey church in 1741, leading to its destruction. A complete reconstruction was undertaken from 1741 to 1756 under the abbacy of François d’Orléans de la Motte, Bishop of Amiens and commendatory.
If the abbey still exists, it is because it was acquired during the Revolution by Jourdain de l’Éloge, lord of the manor of Argoules, who wanted to keep it with the aim of reinstalling monks there.
A Belgian lay community occupied the premises, followed by the brothers of St-Vincent de Paul who set up an agricultural orphanage there.
New drama caused by the law of July 1, 1901 on congregations where the sale was announced in 1906. Thanks to political interventions, the abbey escaped sale and it was classified as a historical monument on September 29, 1907.
A period of abandonment and looting followed, then the abbey was transformed into a Belgian military hospital during the First World War from 1914 to 1918.
It was in 1922 that Mademoiselle Papillon, a nurse with the French Red Cross, founded the Valloires association: preventorium, dispensaries, children's reception, holiday camps, etc. were created.
In France where the abbeys of the Middle Ages are more familiar to us, Valloires is an exception, a sort of miracle of art where the Divine and the Human interpenetrate. The harmony of forms, the sobriety of lines, so much perfect beauty, not to mention the charms of the surrounding landscape and in particular the gardens, imbue the site with an intense aesthetic and even mystical emotion."