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  • Kosterhavet National Park

    Welcome to Sweden’s first marine national park.

    Koster sea under the surface with floating eelgrass

Kosterhavet National Park

The national park lies off the coast in northern Bohuslän and is a valuable recreational resource - it is one of Sweden´s most visited tourist destinations.

Visitor centre

You can reach the main entrance to the national park, on South Koster, by one of the Västtrafik ferries from Strömstad. The trip takes about 45 minutes. Free entrance.

Certified activities in Kosterhavet

See certified activities that aim to offer better experiences and sustainable future. Here you also will find restaurants certified by Västsvenska Mersmak.

Family Fun

Strömstad and the nationalpark offer lots of fun activities for children of all ages. Fish for crabs, cycle on the Koster Islands, go on a seal safari, or visit...

Maritime fun in the national parks

Are you thinking of taking the family to the archipelago paradise on the border and wondering what you can do there? Here are some tips for a three-day...

Kayak rental

Here you find a list of companies that offer guided kayak trips and courses, and rentals in Strömstad and Tanum.

Boating in Kosterhavet

As a traveller at sea, you can contribute to preserving the Parks’ valuable nature for the future! Download the folder Cast off on nature´s terms - a guide with...

Cycling on South Koster

Discover a fantastic part of the Bohuslän archipelago on two wheels. You’ll see small fishing villages surrounded by an amazingly beautiful landscape in...

Koster Islands

If you are in the town of Strömstad you should take the boat out to the Koster islands. On South Koster island there is a small network of bicycle-friendly...

Maps and brochures

Want to download a map or brochure of the Valley? You'll find them here!