To the north is the Medvednica Mountain (), with its highest peak Sljeme(1,035 m), where one of the tallest structures in Croatia, Zagreb TV Tower is located. The Sava and the Kupa valleys are to the south of Zagreb, and the region of Hrvatsko Zagorje is located on the other (northern) side of the Medvednica hill. In mid-January 2005, Sljeme held its first World Ski Championship tournament.