 The 1967 Priory of Sion document "Au Pays de la Reine Blanche" states that "Rennes-les-Bains is located precisely on the Zero Meridian, which connects Saint-Sulpice in Paris" adding that "the parish of Rennes-les-Bains guards the heart of Roseline", in this context being a reference to Saint Roseline de Villeneuve.