CroisiEurope is the only cruise line that offers 6-day voyages on the Douro River in Portugal.
There are quite a few towns visited that are not listed in the itineraries for other cruise companies and some of the additional cities mentioned include Folgosa, Ferradosa and Leverinho.
The Leverinho cruise port map is interactive. It shows the port's exact location, along with the real-time cruise ship traffic (if any) in its vicinity - today, and right now. By zooming-out you can see other cruise ship ports located near Leverinho, Portugal.
If you lose the Leverinho location on the map, simply reload the page (also with F5 button). This feature is integrated with the CruiseMapper's cruise ship tracker tracking the vessels' current positions at sea and in ports.