The ‘herring island’ of Klädesholmen, to the far south of Tjörn, is one of the west coast’s most flawless spots. A mash-up of red and white wooden cottages, its activity is fairly subdued due to the departure of the herring (there were once 30 processing factories here, today just a handful). This tiny museum tells you all you need to know about Sweden's love affair with its favourite fish.