The Grand Cloister was finished in the 17th century. More than one century was necessary for its construction. It forms a vast rectangle of 118m by 55m, a perimeter of 346m. The Fathers' cells open into this cloister.  
Next to every cell door, you can still see the small hatch through which food was passed. EAch father had at his disposal 181m2, comprising: the Ave Maria (where he recited the AVe Maria every time he entered), a walkway, an oratory or office for work and prayer, a garden, and a solarium. The Prior spent 20 hours a day in his cell praying, reading, writing, and meditating. No one else could have access to it.