Christ Church Cathedral Stereographs
These images are crossview stereographs. You can view them in 3d by crossing your eyes until you see double vision: four (blurry) images in total. Try and align the centre two images by changing how much you are crossing your eyes so you see three images in total (two at the sides and two overlapped as one in the centre).
To help align the images pick a strong part of the image and concentrate on getting that part to line up. Try and hold it there until the centre image comes into focus. It might take a few tries. Category: photograph Davy Hudson Tyrrell