In 2009, the region surrounding the Kosterfjord on Sweden’s west coast was named a national maritime park, the country’s first. A new visitor centre has been set up to assist tourists and other interested persons in gathering information on the flora and fauna – both above and below the water’s surface. In addition to an exhibition space and a lecture hall, it also has offices for the administration of the national park.The new building is in Ekenäs, a small port town on the island Sydkoster, the largest in the area; it has been carefully inserted in the town’s existing fabric. Like the traditional boathouses nearby, gables are lined up one next to the other; these define the appearance of the visitor centre. In this manner the architects were able to integrate building massing that is considerably larger than the other buildings. The irregular form of the building footprint and the shift between the gables on the two long sides of the building create a complex roof geometry in which the ridges run at diagonals. The three-dimensional structure is visible inside the building; it creates an intriguing interior space. There are only a small number of windows, and the utmost care was taken in determining their positions: they frame the surrounding landscape, making it appear to be part of the exhibition.