Maribo is a town in Lolland municipality in Region Sjælland on the island of Lolland in south Denmark. To the north of Maribo is Nørresø ("The Northern Lake" or "Northern Maribo Lake") and to the south is Søndersø ("The Southern Lake" or "Southern Maribo Lake"). Søndersø is the largest lake on Lolland. There are more islands in Søndersø than in any other lake in Denmark. These include the islands of Fruerø, Hestø, Præstø, Borgø, Lindø, Askø and Worsaaes. This is part of the Maribo Lakes Nature Park, which spans the towns of Maribo, Holeby, Sakskøbing and Nysted.