The Bernese Oberland refers to the alpine parts of the canton of Bern in Switzerland. It includes the regions around Lakes Thun and Brienz and the areas of the canton to the south of them. The valleys sloping towards the north are in the catchment area of the Aare, which flows into Lakes Brienz and Thun. The lower-lying areas around Thun, Interlaken and Brienz are at an altitude of around 550 to 800 metres above sea level and are more urban in character. The higher-lying areas in the south include the pre-alpine valleys and mountains up to about 3,000 m above sea level as well as the high-alpine peaks such as the Finsterarhorn (4,274 m), Schreckhorn (4,078 m), Eiger (3,967 m), Mönch (4,107 m) and Jungfrau (4,158 m). In these areas there are some regions that are strongly influenced by tourism. Probably the best known in the eastern part of the Bernese Oberland is the Jungfrau region around the main town of Grindelwald; in the western part it is the Saanenland with its main town of Gstaad; in the central part it is the region around Adelboden and Kandersteg. There are also individual regions and places where tourism is somewhat less important. For example, these are the more industrially oriented Frutigen, or the service-oriented lower Haslital around Meiringen and Hasliberg.