The Vasa Museum in Stockholm, displays the war ship Vasa that was sunk in 1628 in August in Stockholm harbour. The website is fantasitc as it shows how a ship is conserved and now is a major tourist attaction - it attracted 1,154615 vistors in 2009.  Vasa returned to the surface in 1961.

"For nearly half a century the ship has been slowly, deliberately and painstakingly restored to a state approaching its original glory. The three masts on the roof outside the specially built museum show the height of the ship's original masts". (http://beta.stockholmtown.com)

 The link for the museum is:
vasamuseet.se/en/