Author 'Crabecanoe' (Id 124392 ) : Citadel of Lille. Inside the chapel. Vault overturned hull. This chapel is located inside the citadel of Lille. The frame is shaped hull boat overturned. The chapel is still in business and church services are held there intermittently. Notice the beauty of the building and its spare style and noble. Another chapel of the same style is at Fort near the redoubt of the City of Lille.