I don't find it amazing at all. This 150 year old ship travels in the sea of the imagination and as a result can never be surpassed by anything that we can actually create. It has been the basis for just about every modern submarine and and their isn't an inventor alive that doesn't list jules verne and his writings (specifically the nautilus and the moon rocket) as a significant source of inspiration. Lots of things have been written in the last 150 years, but the Nautilus' promenience (?sp?) is because of its superiority.
While there have been some hits and misses with Disney, the goffe designed Nautilus is a masterpiece and will forever keep the Nautilus alive. Probably second only to the USS Enterprise from star trek, it is the most recognizable ship of the imagination. Also consider the year, 1951 - this attention to detail and use of the ship as a central character of the story, was unpresidented (?sp?) in movie-story telling. It wouldn't be until Star Wars ( well, I not sure about 2001) that this kind of attention to detail was made.
The amazing thing about this hobby is how so many people make the effort they do to plan, discuss and build models of the various Nautilus designs. For a boat that never existed, except in books and films, it is truly marvelous! Personally, I'm attached to Disney's film version and have long wondered when someone is going to build a man-carrying version (30 feet or so). But, why aren't there more models of the Seaview?