Ertholmene consists of three main islands, Christiansø, Frederiksø and Græsholm, plus a number of rocks and
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Fishermen from Bornholm have used Ertholmene for temporary shelter since the Middle Ages. The first permanent settlement was the result of the Danish-Swedish conflicts in the late 17th century. As Denmar… See more

• Ernst Wilhelm Stibolt (born 1741 in Christiansø – 1796) a Danish naval officer and ship builder; his father, (naval) Commander Caspar Henrik Stibolt, was Commandant of Christiansø for many years.… See more

Together with Bornholm, Ertholmene is part of Landsdel Bornholm. Ertholmene makes up the Parish of Christiansø in the Church of Denmark and is served by Christiansø Church. On 1 January 2017 out of 78 inhabitants … See more

The major sources of income in Ertholmene is tourism. There are about 45,000 visitors per year, mostly day visitors arriving via Bornholm during the summer months. Ertholmene is also a popular destination for yachting. … See more