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Aerial of Kosterhavet National Park with the ocean and islets.
Koster – a marine national park
Kosterhavet is one of Sweden’s 29 national parks. Inaugurated in 2009, it is the first marine nature park in Sweden. It is part of the Skagerrak sea and consists of the sea and shores around the Koster Islands. It contains coral reefs and a unique flora and fauna, making the park a great snorkelling site.
Photo credit: Per Pixel Petersson/

Naturum, Kosterhavet

Located in Sweden’s first marine national park on the island of Sydkoster, Naturum by Gothenburg-based White architects, is a spectacular destination.

Surrounded by crystal clear sea, this red sea hut-inspired building, covered in a smooth Falun-red timber-panelled facade, offers exhibitions, seminars and advice on excursions including snorkelling in Sweden’s only coral reef and exploring the unique sea wildlife up-close in the aquarium. 

Make sure to make the most out of your visit, Sydkoster is also the home of Pensionat Ekenäs Koster and Koster Trädgårdar, complete with an ecological bakery, restaurant, farm shop and lush garden where vegetables and herbs are grown. But most importantly – don’t miss Sydkoster's spectacular wild nature and beaches available free of charge!