What are the best trips on a Norwegian fjords itinerary?

Do you know of any trips not to be missed on a Norwegian fjords itinerary?

There are many cruise lines which operate Norwegian fjords itineraries and each offers a wide choice of excursions to suit any type of traveler. The type of trip depends on how active you are, but certainly not to be missed are trips out to the most renowned fjords such as the UNESCO World Heritage Site Geirangerfjord and the beautiful Hardangerfjord, a trip on Flam’s famous railway, and sight-seeing tours of the art Nouveau town of Alesund and Bergen’s historic Hanseatic Wharf, another World Heritage Site.