Church of Our Saviour on the Spilled Blood, St Petersburg, Russia. As a ghost, I am looking for a castle to haunt. What about this one? I know it isn't technically a 'castle' but look at its magnificent size! I think it would still be splendid to haunt.
The Sainte-Chapelle de Vincennes is a Gothic chapel within the fortifications of the Château de Vincennes near Paris, France. It was founded in 1379 by Charles V of France to house relics of the passion of Christ.