(Stockholm) — One of the neatest museums in the world is Stockholm’s Vasa Museum. The entire museum is built around a single wooden sailing warship called the Vasa. Built during Sweden’s years as a world naval power in the 1600s, the Vasa, having just had its christening, slid out in the Stockholm harbor and, because it had so many canons on it, quickly tilted over, filled with water and sank instantly to the bottom.  It remained on the bottom for hundreds and hundreds of years, perfectly preserved by the rich mud until it was rediscovered in the 1960s, raised  and pumped full of preservatives. The whole museum is built around the ship, allowing you to get up close to its sides, peek in its decks and really get a feel for the real deal.  It really is cool. Even my nieces liked it.