To visit King’s College Chapel you must show your ticket at the Gate House and then walk around to the right and the entrance to the chapel. After you’ve finished in the Chapel though you are free to walk around some of the grounds. Note that the college buildings themselves are private but you can take photos outside and walk around the Back Lawn and down to the River Cam – basically the view you get from walking along the Backs as I had done previously, only this gives you a better close up of the exterior to the chapel.
Louise Jayne's Blog 