Vaasa Maritime Museum tells the city's sea story from Vaskiluoto, with ship models, maritime tools, photographs, and material tied to trade and life on the Gulf of Bothnia. It gives context to a city whose harbour and archipelago are easy to overlook from the centre.
The museum is modest, but worthwhile if you are interested in coastal history or already heading toward the harbour area. Pair it with a walk by the water or a wider Kvarken-focused day to make the maritime theme click.