The Journées du Patrimoine 2025 are back in style... and this time, they're taking place in the majestic Notre-Dame de Paris cathedral! After previous editions restricted to the forecourt due to the fire in 2019, the event is coming back to life within these walls steeped in history. On September 20 and 21, come and enjoy a unique experience and rediscover this Gothic masterpiece as you've never seen it before.