FAQ page
In both of the castles from the first tower in the Chapel, before the room with the Spectral sword and across from the Confession room, go to the bottom of the room. Perform The Sword brother's spell , then quickly turn into a bat, then perform the turbo bat spell you will need the bat relic for this. You should now be outside the castle, now fly, walk and run around out side the casle, they will be white squares on the map.