Piazza del Duomo is the main piazza of Milan, Italy. It is named after, and dominated by, the Milan Cathedral. The Gothic cathedral took nearly six centuries to complete. It is the fifth largest cathedral.
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.