No. It's good, but it's not incredible. Most Alaska cruises only go to relatively built-up areas, although these do offer some access to the "wonders of nature" that Alaskan cruises are basically marketed on.

If you want something incredible, try Antarctica - but on a ship which is small enough to allow you to land. There are some such cruises that are quite affordable, although there are serious expedition cruises which also have Arctic equivalents, eg right up to the North Pole itself.