This is a zoomable Gigapixel panorama of Sheffield taken from Parkwood Springs near the ski-slope. The picture is stitched with the Hugin panorama stitcher, and is itself 1.6 gigapixels but most of these pixels are sky. It still has a lot of detail, you can (just about) read the time on the town hall clock and at least three other clocks. Unfortunately it was raining and the light was fading, it would be nice to do a series of Sheffield from different vantage points.
This is a smaller version of the view on Flickr, use the link above to see the zoomable version: