The famous warship Vasa which sank in 1628 in the harbor of Stockholm was found and then raised
in 1961. A sensational event which was at that time reported in TV and press world wide.
Barely out of the water, immediately the painstaking process of preserving the wood started. The restoring and keeping the ship intact is an ongoing process.
Now it is housed in a special designed building and more then 30 million visitors (more then one million yearly) have had the chance to get close to a 17th century royal warship.
Most of the visitors stay longer than they plan because they get an understanding for Sweden as a Great Power involved in endless warfare during the 17th century. A different Sweden now has peace keeping forces and has had peace for the last 200 years.