The beautiful Pedernales Falls in the middle of Texas, a stitch of about 10 photos. The larger version has a lot more detail, though it does require scrolling. The stitching ain't the greatest -- you can see the seams if you look closely -- but I think the landscape makes up for it!
Actually, for stitching so many together, I think it came out really well! It certainly gives a better sense of scale than anything I took when we were there.