Interlaken (ĭnˈtərläkən) [key], town (1990 est. pop. 5,180), Bern canton, central Switzerland, between the Lake of Brienz and the Lake of Thun. Its manufactures include textiles and watches. Interlaken is one of the largest tourist resorts (mainly summer) in the Bernese Alps, and its yearly visitors far outnumber its permanent inhabitants. The region is famous for its magnificent view of the Jungfrau peak.