The Hütten Hills − part of the Schleswig-Holstein Uplands − lie roughly between Fleckeby to the north, Ascheffel to the east, Alt and Neu Duvenstedt to the south and Brekendorf to the west.
33392)[1], which was established in 1971 and covers an area of about 219 km2, extends far beyond that of the Hütten Hills to the west and almost reaches the Bay of Eckernförde in the east.
The nature park covers the following municipalities (most of which belong to the Amt of Hüttener Berge): Ahlefeld, Alt Duvenstedt, Ascheffel, Bistensee, Borgstedt, Brekendorf, Bünsdorf, Damendorf, Groß Wittensee, Haby, Holtsee, Holzbunge, Hütten, Klein Wittensee, Neu Duvenstedt, Osterby, Owschlag and Sehestedt.
Its rivers and streams include the: Alte Eider, Hüttener Au, Mühlenbach, Osterbek, Sorge und Schirnau.
On the nearby Aschberg stands a Bismarck statue and on the dome of the Heidberg (Heideberg), which is popular with hikers, lies a glacial erratic.