The Kvarken Archipelago is a unique UNESCO World Heritage Site featuring rapidly rising land, intricate island formations, and rich natural habitats ideal for hiking, birdwatching, and sea kayaking.
The Kvarken Archipelago, situated between Finland and Sweden in the northern Bothnian Bay, is a striking UNESCO World Heritage Site distinguished by its exemplary post-glacial rebound landscape. This dynamic geological process causes the land to rise by nearly a centimeter annually, continuously reshaping the area's hundreds of islands, skerries, and shallow waters. The archipelago covers approximately 6,600 islands in Finland's Kvarken region and the nearby Northern Quark in Sweden. The landscape is characterized by flat, smooth Baltic Sea cliffs, vast moraine ridges known as De Geer moraines, and unique shallow waters that create a mosaic of habitats. Ecologically, the area supports rich biodiversity, including diverse seabird colonies, migratory birds, seals, and rare plant species adapted to the brackish water environment. Historically, the Kvarken islands have been inhabited for centuries, with cultural traces visible in fishing villages and small harbors. Outdoor enthusiasts visiting the Kvarken Archipelago can enjoy hiking along marked trails on islands such as Björkö and Replot, where panoramic views of the archipelago are available. Sea kayaking and boating are popular for exploring the waterways and gaining close views of the rapid land uplift phenomena. Birdwatchers frequent the area, especially in spring and autumn, for rare migratory species. Winter offers opportunities for cross-country skiing and ice-fishing when conditions permit. The area is remote and peaceful, making it an appealing destination for nature lovers seeking both geological wonder and outdoor recreation. The nearby towns of Vaasa (Finland) and Umeå (Sweden) serve as gateways for visitors with ferry connections and essential amenities.
De Geer moraines – vast parallel ridges formed by glacial deposits
Rapid post-glacial land uplift visible in changing shorelines and new islands
Björkö island hiking trails with scenic views over the archipelago
Rich seabird colonies and migratory bird watching hotspots
Distinctive parallel moraine ridges stretching through the archipelago, formed during the last Ice Age, showcasing unique geological history.
One of the world’s fastest land rises caused by post-glacial rebound, creating new islands and constantly altering the landscape.
A series of well-marked hiking routes on Björkö island with vantage points providing expansive views over the sea and islands.