Vasa Ship Museum

The Vasa museum comes up on Tripadvisor at the top for good reason.  The huge ship from the 1620s has been amazingly preserved.  Plus the additional section on life around the world in that era was really well done and informative.  The ship looks like a haunted pirate ship but it is not.  Not a pirate ship anyway, the thing sank 20 minutes into its service life.  It may be haunted though.  The skeletons they found inside were brought up and displayed with the rest of the wreckage.

http://www.vasamuseet.se/en/

"Vasa Top Deck" by OneHungLow.