I always get a thrill when a shot of Earth from space shows something recognizable, and there's hardly a more obvious landform on the planet than the boot of Italy. Lit up at night, as seen in this picture taken on June 15, 2011, the boot's outline is drawn in for you by such cities as Bari, Brindisi, and Naples. Sicily is lit up as well. The ISS was almost a thousands kilometers east of Italy when it took this shot looking west, which is why it looks a bit squashed, foreshortened by the curve of the Earth.

[Update: Some folks are wondering about the orientation of this picture. The ISS was northeast of Italy, over Romania, when this shot was taken, and the photographer was looking west. The limb of the Earth can be seen to the lower left. If you imagine yourself looking up at the Earth in this picture, not down, you can flip the orientation in your head like an optical illusion. Try it!]