Koster

The Koster islands, consisting of North and South Koster, are Sweden’s most westerly inhabited islands and are mostly covered by nature reserve. Since the islands are virtually car-free, they attract large numbers of cyclists and hikers. South Koster is a perfect island for cycling, and bikes can be hired at every pier on the island. The best way to get around North Koster is by foot, as the road network consists mainly of paths. Both islands have a variety of nature types, with lovely swimming beaches, moors, small forests, orchids and rocky landscapes with clear traces of the Ice Age.

http://www.vastsverige.com/en/Articles/The-Koster-Islands/