Open Google Earth

Click the Directions Tab

In the From box type any city (I.E. New York, New York) in the United States

In the To box type in any major city in Europe (I.E. Paris France.

Click the "Begin Search" button (The magnifying glass)

Written directions will be presented. Scroll down the directions and you will find your directions will always lead you to a "long wharf" in Boston and you are told to "Swim the Atlantic Ocean".