In July, just prior to a business trip to Stockholm, Sweden, I visited far-northern Norway - above the Arctic Circle - where, at the time, the sun was up 24 hours per day. This photo was taken shortly after midnight. If it hadn't been for the clouds at the far right, the sun would have been visible.
(July 10, 2009. Nikon D-5000 (DSLR), HDR from 3-shot bracketed exposure (-2,0,+2 EV), 24mm, ISO 200.)