
Château de Vincennes is an ancient medieval royal fort unique in the Île-de-France region. It boasts a 50-metre high keep, a Gothic Sainte-Chapelle and ramparts that are open to visitors.
Open daily, tickets cost around €13, with free admission for EU residents under 26. Guided tours and a digital tour with tablet are available. The Sainte-Chapelle is a must-see for lovers of Gothic architecture.