La Cité is the world's largest living and resource center for architecture and urban planning. It's a museum, a library, an auditorium, a specialized bookshop and a restaurant. 22,000 m2, where you can stroll, discover, look, have fun and relax... It's also a unique experience: a tour of France's most beautiful buildings and constructions from the Middle Ages to the present day, a collection of models and life-size reproductions, a 3D museum of architecture!