Google Maps offers a satellite view or a street-level view of tons of locations around the world. You can look up landmarks like the Pyramids of Egypt or the Great Wall of China, as well as more personal places, like your ex’s house.
However, for all of the places that Google Maps allows you to see, there are some that are off-limits, actually there are 51 "Prohibited" places.
Check out the list here.
I really enjoy reading point 23:
"Iran: Late in 2007, an Iranian businessman tried to download Google Earth and got a message that said, "Thanks for your interest, but the product that you're trying to download is not available in your country."