The Koster Islands are a group of islands located off the southwestern coast of Sweden, near the town of Fjällbacka. They are part of the Kosterhavet National Park, which is known for its rich marine biodiversity and beautiful landscapes. The islands are popular for outdoor activities such as hiking, kayaking, and birdwatching. The Koster Islands consist of two main islands, North Koster and South Koster, along with several smaller islets. The area is characterized by its rocky shores, sandy beaches, and lush vegetation. The islands are also home to a small population, with a few seasonal residents and visitors enjoying the tranquil environment.