Turn left from the Grandes Écuries stables, cross Avenue de Sceaux and Avenue de Paris, pass the imposing chancellery on the corner, and take Rue de Satory (a cute pedestrian shopping street) to the Cathédrale St-Louis. Outside, the 18th-century seat of the Bishop of Versailles is notable for its dome and twin-tower facade; inside, the sanctuary is enriched with a fine organ and paintings. On Thursday and Saturday mornings, the square in front of the cathedral hosts a classic farmers' market.
Pl. Saint-Louis, Versailles, 78000, France