
1) Viking Ship Museum, Roskilde – Denmark
A cathedral of seafaring archaeology: five original 11th-century ships raised from Roskilde Fjord, displayed against the water that once carried them. Outside, the boatyard builds and sails full-scale reconstructions (like the Sea Stallion), so you can watch clinker planks, tar, and rivets become a living longship — the best place to feel how Vikings actually moved across the map.