Fodor's Expert Review Cathédrale St-Louis

Not far from the Grandes Écuries stables, on a lovely square at the heart of the town's old center, the Cathédrale Saint-Louis (also known as the Cathédrale de Versailles) dates to the reign of Louis XV. 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.