Well, it's not a "real" tourist trap from any point of view, but better to tell you something about this (looking) old ship. It's not a 17th century galeon, it was built in the 80s fot Roman Polanski's movie "Pirates" with Walter Matthau! So it could be interesting for movie-fans, but remember that it just a reconstruction of a similar old galeon...
Unique Suggestions: If you are a Roman Polanski fan you have to see this ship, it won't be a tourist trap for you!
Fun Alternatives: Go to the Aquarium or just walk along the nice Expo district