
Once a medieval royal palace, the Conciergerie is best known as the central prison of the French Revolution where Marie Antoinette awaited execution. Because few original interiors survive, the experience relies heavily on the provided HistoPad—an augmented reality tablet that reconstructs the Reign of Terror. A standalone visit takes about an hour and costs 13 EUR, making it an easy addition to a day on the Île de la Cité. For the best value, pair this historical monument with the spectacular stained glass of neighboring Sainte-Chapelle.



