|Northeast of Bornholm, Denmark|
|In use||1684-1855 (1863)|
Ertholmene, old spelling Ærtholme(ne), so named because they are very small (ært is Danish for pea), generally called Christiansø, also by Statistics Denmark and the Church of Denmark, is a small archipelago situated approximately 19 km (12 mi) northeast of Gudhjem, Bornholm or 27 km (16-17 mi) east of Sandvig in the Baltic Sea. This is 106 miles (170-171 km) southeast of the capital of Denmark, Copenhagen, as the crow flies.
Its permanent population has been as follows, each year 1 January: 2002:106 inhabitants;2007:95 inh.;2010:101 inh.;2012:103 inh.;2014:90 inh.;2016:91 inh.;2017:78 inh.
Its area is 39 hectares (0.39 km2) (0.16 sq mi).
Statistically together with Bornholm it is part of Landsdel Bornholm.
Ertholmene make up the Parish of Christiansø in the Church of Denmark (Danish Christiansø Sogn), served by Christiansø Church. 1 January 2017 out of 78 inhabitants in total there were 69 members of the Church of Denmark (88.46% of the population).
Christiansø makes up 22.3 hectares (0.0861 sq mi), Frederiksø 4 (0.01544 sq mi), and Græsholm 11 hectares (0.04247 sq mi). Only Christiansø and Frederiksø are inhabited, while Græsholm is a bird reserve. The sound between Christiansø and Frederiksø, a well-sheltered natural harbour, is crossed by a pedestrian bridge that is pulled aside to accommodate larger vessels.
Ertholmene have never been part of a municipality, county, or region.
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 Denmark needed a naval base in the central Baltic Sea, a fort was built on Christiansø and Frederiksø in 1684 which served as an outpost for the Danish Navy until 1855. Christiansø Church originally served the garrison. The population peaked at the census in 1810 which showed 829 inhabitants. They were soldiers and were there because of the Gunboat War. Many of the historical buildings now serve as living quarters for the local population, and some are rented, year after year, to regular summer residents. The islands' external appearance has changed very little in over 300 years. Girdled by thick granite walls with old cannons pointed seaward, Christiansø is a picturesque tourist spot seemingly frozen in time. A former part of the fort, Store Tårn has housed the Christiansø Lighthouse for the past 200 years, and a small round tower on Frederiksø, Lille Tårn, serves as a museum.
The islands are an unincorporated area that does not belong to either a municipality or a region. Instead they are state property governed by an administrator, appointed by the Danish ministry of defence, with the responsibility being the tasks normally performed by municipalities and other public sector civil services. The major sources of income are fishery and tourism. There are 80,000 tourists per year, mostly day visitors arriving via Bornholm. Ertholmene is also a popular destination for yachts.
The islanders, who do not pay municipal taxes of any kind and were never part of a municipality, will be exempt from the central government "Health Contribution" tax (Sundhedsbidrag) which stood at 8% when it was introduced 1 January 2007 with Kommunalreformen ("The Municipal Reform" of 2007), because it is anticipated the relatively isolated islets would otherwise be abandoned. This tax replaced the county tax, which the islanders were also exempt from paying, not being part of a county. From 1 January 2019 this tax will be abolished, while income taxes in the lowest bracket will be raised simultaneously instead with this tax being phased out. In 2012 this tax was lowered to 7%, 2013 6%, 2014 5%, 2015 4%, 2016 3%, 2017 2%, 2018 1%.
- Distance as the crow flies
- Statistikbanken.dk/Population and elections/Population and population projections/Population in Denmark/(Table)BEF4:Population 1. January by islands (1901-2017)/Christiansø + Frederiksø/Select year(s)
- Otto Norn, C. G. Schultz, Erik Skov, "Christiansø Kirke": Bornholms Nørre Herred, Danmarks Kirker, Bornholm, Nationalmuseet, Gad, 1954, pp. 576–583. (in Danish) Retrieved 2 October 2012
- Anker E. Kofoed: Christiansøs Historie, Christiansøs Museum, 1984. (in Danish)
- Bornholm.nu » Christiansø » Ingen sundhedsskat på Chr.ø
- Bornholm.nu » Christiansø » Bornholm kan få Christiansø
Media related to Ertholmene at Wikimedia Commons