Located in Kassari village's old post office, this small museum has a collection of artefacts and exhibits on Hiiumaa’s history and biodiversity. Among the curiosities: a 1955 Russian-made TV, the jewel-like prism of the 1874 Tahkuna lighthouse and the stuffed body of the wolf that allegedly terrorised the island until its 1971 demise. It also sells excellent handicrafts and special island postal stamps.
