Bremen Switzerland (German: Bremer Schweiz) is an undulating geest landscape in the north of Bremen (Bremen Nord) and the adjacent district of Osterholz district, and forms the western portion of the Osterholz Geest. In comparison to the rather flat land on which the city of Bremen is built and its surrounding area which is built on marsh and bog, Bremen Switzerland reaches heights of up to about 30 m above sea level (NN).