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  • Welcome to the Koster Islands

    Photographer: G Assner

The Koster Islands

Visiting the Koster Islands is like taking a holiday from everyday life, only a two-hour drive up the lovely coast from Gothenburg. Once you arrive, you are greeted by an amazing archipelago, picturesque fishing villages in a gloriously beautiful natural landscape, breath-taking views and much more. Large parts of the islands have been declared a nature reserve and the surrounding waters are part...

Explore Koster

Strömstad has the saltiest water on the west coast, and is the location of the Kosterhavet National Park, the only marine national park in Sweden. Just 45 minutes by boat to the west, the Koster Islands offer excellent opportunities for walking, kayaking and cycling.


South Koster is ideal for exploring on foot or by bike as the island has virtually car free. To make it easier for you to find the walking trails on North and South Koster. 

Cycling with family

There is something special about cycling on the almost completely car free island of South Koster. The island is only 8 square kilometres in size, so the distances are perfect for cycling with the whole family.


The Koster Islands and the surrounding Kosterhavet Marine National Park offer amazing opportunities for kayaking. All the way from Ramsö and Ursholmen in the south to Saltholmen in the north are lots...

Naturum Kosterhavet

The Kosterhavet National Park’s main information centre – “naturum” – is located in Ekenäs on South Koster, naturum offers expert help and has displays about the natural history of Kosterhavet. Open all year round and free admission.

Must do

The Koster Islands offer excellent opportunities for exploring beautiful nature

Getting here

The passenger boat (Kosterbåten) brings you to these most westerly, populated islands of Sweden. Depart daily from the "norra hamnen" in Strömstad at the main...

Koster map

South Koster is ideal for exploring on foot or by bike.


Here we have collected the most common questions we get.