Google Earth is interesting. When it debuted, I looked at the Rock of Gibraltar, and found it was flat to the sea. Now it actually looks like a Rock. However, Cape St. Vincent (spectacular 100 meter cliffs at the bottom lefthand corner of Portugal) is still at sea level. Also, as Spaw said, the definition is very variable. In much of our area (Boston MA), you can see cars in driveways. The village my sister-in-law lives in in France is barely recognizable as a village, let alone seeing houses, or even roads. That said, a half a loaf is better then no bread.