Marble, City Maps and Territories

Very nice program to see maps of the Earth view (and Moon and Mars). It as a kind of gigantic world atlas (road and not only). Clicking on any of the places in the map, you are also automatically sent to the corresponding Wikipedia article (if available).
And can display a world map both daytime and night (as the night vision is less detailed than in daylight), and turn the earth with the mouse. Clicking the right mouse button, you can measure the distance between two points.
And essential connection to the Internet, since many data are downloaded online gradually, depending on our use (such as the Wikipedia information).
Marble is not even particularly hard for what he does, so it should run quite well on a computer not very recently.

Marble