Muddus is an unbroken assemblage of virtually primeval forests and peatlands on moraine-covered granite. It is situated just inside the Arctic circle in the area of Gällivare in Swedish Lapland. Lake Muddusjaure lies in flat ground gorges in the southern part of the park; the Muddusjokk has a waterfall with a 42-metre drop.

Europe's largest national park. Undisturbed mountain landscape with impressive peaks, glaciers and steep-sided valleys in Sarek, and wide plateaux with extensive lakes in Padjelanta.

Store Mosse is the largest peatland region south of Lapland. Although situated in southern Sweden, it provides a habitat for animal and plant species typical of the country’s northerly regions. Lake Kävsjön is known for its bird life. In the post glacial era, Lake Fornoholmen occupied what is now the bog area. It dried up 8000 years ago, and its wide sandy bottom was exposed. Later, a more humid climate caused peat deposits to accumulate to a depth of between 3 and 7 m.

The two nature reserves Bullerö and Långviksskär make up a magnicificent part of the Swedish archipelago outside Stockholm. Together the reserves cover more than 1 200 islands, islets and rocks. The birdlife is rich with more than 100 different species. The flora is typical for the archipelago and on some of the islands the open meadows are grazed. In parts of the reserves older archipelago buildings have been carefully renovated. The purpose of the nature reserves is to preserve a genuin part of the outer archipelago with high natural and cultural values and to promote outdoor recreation.