Fisheye lens gave interesting perspectives of the sinuous rocky hallways and windowsills of this 14th century prison.
Inside views shot with a Rokinon 8mm f/3.5 fisheye lens, outside views with a Tamron 90mm f/2.8 lens and a Minolta 500mm f/8 mirror lens. Sony α77 camera.
I had made a post with pictures of the scenery viewed from the higher part of the tower in this previous post.