
In 1669 the priest of Allouville , Abbot Du Détroit and father Du Cerceau decided to build a chapel in the already big and hollow oak, with a small altar with an image of the Virgin Mary. The chapel was dedicated to " Our Lady of Peace ". Later on a second chapel was arranged above the first and an entrance - staircase added. A hermit seems to have lived for some time in it.
During the French revolution, some wanted to burn the tree, but the villagers opposed this. The tree is a greater monument than any building, and many generations of people may find a moment to reflect at its chapel and under its foliage" (Le Vieux Chene D'Allouville, 1830.)
Parts of the tree are dead, the crown has become smaller and smaller over the last century and dead parts of the trunk are sheltered by wooden slates. The oak is supported with poles and cables. Since 1854 the Mass is read twice a year near the oak: on the second of july ( the Patron-Saint's Day ) and on the day after the first Holy Communion.
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