Now head to the far side, along the rafter opposite where you entered and above the largest throne, and carefully strike or roll into the illusory wall ahead to reveal a secret passage. Once up on the roof, follow it clockwise until you find an opening leading to the rafters then carefully walk over them to grab the item on top - an Estus Shard to give you an extra flask use. Opposite the entrance to the tower, run at the tree then jump over to the rooftop ledge - you may need to reduce your Weight Ratio below 70% to make the leap. However, there's a little shortcut in this area you can use to reach the rooftop of the shrine and find some valuable items.
Heading up through Firelink Shrine and outside at the higher level, you'll find a locked tower which can only be accessed by purchasing the Tower Key from the Shrine Handmaid for a cool 20,000 souls.
