I scaled this down for upload considerably. The original file is something like 30x70 inches. It doesn't look like much but it was my first time working with something this massive. The image is composed of five images across and three tall for a total of 15 images stitched together. Additionally each of those 15 consisted of 3 raw photos to make an HDR image that was then used to be stitched together. Photos taken with sony nex 5n and 18-55mm lens. While nowhere near as good as this guy, some inspiration was from, aaronhobson.com/index.html.