Europe is a big place but quite manageable and convenient when cruising from port to port.  But first you must get there from North America.  That involves either a Transatlantic Voyage or a plane trip to your European port of disembarkation.  Once there, the choices are many.

Northern Europe includes Scandinavia, Russia, Greenland, Iceland and Eastern Europe.  Europe is Great Britain, Ireland, France, Holland, and the low countries.  Then there is the Western and Eastern Mediterranean, the Holy Land, and Egypt.  River cruises on famous rivers such as the Rhine, Mein, Danube, Volga, and Seine give you an exceptional view of the interior of Europe.