A shrine to rugby as an example of the Christian spirit, it has a stained-glass window where the Virgin Mary gazes beatifically at a scrum at her feet. Another window features Baby Jesus poised to throw a ball to a lineout. Each of the players in the lineout is wearing a different coloured jersey, to show rugby as a unifier of men.
Other Catholic churches may have statues, religious paintings or relics of the saints; Notre-Dame-du-Rugby has on its walls rugby shirts donned by national heroes and behind its altar are old rugby boots. Like the bones of the holy, these revered objects are carefully protected in glass cases.
The church was set up in 1967 by a rugby-crazed priest, Father Michel Devert, who has handed over to a younger devotee, Fr Gilbert Lavigne, although he still officiates at Pentecost when rugby fanatics make an annual pilgrimage. In 2006, the ageing priest was honoured with one of France's highest awards, the Ordre National du Merite.
In the run-up to this year's World Cup, the chapel hosted a mass where "we prayed for fair play, quality play and friendship in three languages, English, French and Spanish," Fr Lavigne told the Herald.
"The sermon was given by a priest from Cameroon who plays rugby. He prayed for the Southern Hemisphere sides in the tournament. And at the end we declared the tournament open."
Three hundred kilometres northeast of Larriviere, at the basilica of Notre-Dame-de-Rocamadour, is La Chapelle de l'Ovalie, literally the chapel of the oval ball. The chapel is tucked away in a sanctuary that claims miracles performed by the Virgin Mary. More than a million pilgrims visit it each year.
As luck would have it, La Chapelle de l'Ovalie was consecrated last weekend, less than 24 hours after Les Bleus sneaked past Wales.
"Nobody believes us that the consecration was a coincidence, but it is true. In fact we were sure [Les Bleus] wouldn't make it to the final," said Fr Ronan de Gouvello, the priest at La Chapelle de l'Ovalie.
"Actually, when we saw the match on Saturday we realised that we would need prayers to win the cup. So everybody was listening on Sunday when the bishop gave the sermon on spirituality and rugby."
Fr de Gouvello says the consecration of the chapel is a sign that rugby is a partner in Christ.
"God is not the first concern of people who follow rugby. But I think lots of rugby men will be coming to pray here this week," he predicts.
The chapel lacks the colour (and scent) of Notre-Dame-du-Rugby but Fr de Gouvello says this will change once he starts to decorate.
"We're hoping to get an All Blacks jersey hanging here, that really will be good."
