Slotsholmen (
English: The Castle Islet) is an island in the harbour of
Copenhagen
Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...
,
Denmark
Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a ...
, and part of Copenhagen
Inner City
The term inner city (also called the hood) has been used, especially in the United States, as a euphemism for majority-minority lower-income residential districts that often refer to rundown neighborhoods, in a downtown or city centre area. Soc ...
. The name is taken from the successive castles and palaces located on the island since
Bishop Absalon constructed the city's first castle on the island in 1167 at the site where
Christiansborg Palace
Christiansborg Palace (, ) is a palace and government building on the islet of Slotsholmen in central Copenhagen, Denmark. It is the seat of the Danish Parliament (), the Danish Prime Minister's Office, and the Supreme Court of Denmark. Also ...
lies today.
Recognised as the centre of the
Government of Denmark
The Cabinet of Denmark (), officially the Government of the Kingdom of Denmark (), is the national cabinet of the Kingdom of Denmark. It has been the chief executive body and the government of the Danish Realm—Denmark proper together with the ...
since the
Middle Ages
In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of global history. It began with the fall of the Western Roman Empire and ...
, the island is sometimes referred to as 'the Island of Power' (''Magtens Ø''), and is lined with central government institutions and ministries; the name ''Slotsholmen'' is thus also frequently used as a
metonym
Metonymy () is a figure of speech in which a concept is referred to by the name of something associated with that thing or concept. For example, the word "wikt:suit, suit" may refer to a person from groups commonly wearing business attire, such ...
for overall Danish governmental administration.
The island is dominated by the vast
Christiansborg Palace
Christiansborg Palace (, ) is a palace and government building on the islet of Slotsholmen in central Copenhagen, Denmark. It is the seat of the Danish Parliament (), the Danish Prime Minister's Office, and the Supreme Court of Denmark. Also ...
which houses the
Danish Parliament
The Folketing ( , ), also known as the Parliament of Denmark or the Danish Parliament in English, is the unicameral national legislature (parliament) of the Kingdom of Denmark — Denmark proper together with the Faroe Islands and Greenland. E ...
, the
Supreme Court of Denmark
The Supreme Court (, lit. ''Highest Court'', , ) is the supreme court and the third and final instance in all civil and criminal cases in the Kingdom of Denmark. It is based at Christiansborg Palace in Copenhagen which also houses the Danish Pa ...
, the
Prime Minister's Office and the
State Rooms
A state room or stateroom in a large European mansion is usually one of a suite of very grand rooms which were designed for use when entertaining royalty. The term was most widely used in the 17th and 18th centuries. They were the most lavishly ...
of the
King
King is a royal title given to a male monarch. A king is an Absolute monarchy, absolute monarch if he holds unrestricted Government, governmental power or exercises full sovereignty over a nation. Conversely, he is a Constitutional monarchy, ...
. Also located on the island are the most important ministries, the
Danish National Archives
The Danish National Archives () is the national archive system of Denmark. Its primary purpose is to collect, preserve and archive historically valuable records from central authorities, such as ministries, agencies and national organisations and ...
, the
Royal Danish Library
Royal Danish Library () is a merger of the two previous national libraries in Denmark: the State and University Library in Aarhus and the Royal Library in Copenhagen
Copenhagen ( ) is the capital and most populous city of Denmark, wit ...
, several museums and the historic buildings of the
Christian IV's Stock Exchange, the
Chancellery and
Christian IV's Brewhouse.
History

The site used to consist of several small natural islands in the sound between the islands of
Zealand
Zealand ( ) is the largest and most populous islands of Denmark, island in Denmark proper (thus excluding Greenland and Disko Island, which are larger in size) at 7,031 km2 (2715 sq. mi.). Zealand had a population of 2,319,705 on 1 Januar ...
and
Amager
Amager ( ), located in the Øresund, is Denmark's most densely populated island, with more than 216,000 inhabitants (January 2022). The protected natural area of ''Naturpark Amager'' (including Kalvebod Fælled) makes up more than one-third of the ...
. On the largest of these, Strandholmen (English: Beach Islet),
Bishop Absalon of Roskilde constructed a small castle in 1167. In 1250 the castle was extended with two side towers to get the appearance that is now depicted on
Copenhagen's Coat of Arms. The castle was conquered by the
Hanseatic League
The Hanseatic League was a Middle Ages, medieval commercial and defensive network of merchant guilds and market towns in Central Europe, Central and Northern Europe, Northern Europe. Growing from a few Northern Germany, North German towns in the ...
1368 and pulled down the following year as part of peace terms. Shortly after
Copenhagen Castle was built on the same site and it became the residence for the Danish king in 1443.
After the 1535-36 siege of Copenhagen during the
Count's Feud
The Count's Feud (), sometimes referred to as the Count's War, was a Danish war of succession occurring from 1534 to 1536, which gave rise to the Reformation in Denmark. In the broader international context, it was a part of the European wars of ...
, it became clear that the castle was outdated as a military installation, and
King Christian III transformed the castle from a military stronghold to a more liveable royal residence. However, the reconstruction took place in a rather haphazard way and continued during the reign of the following kings, resulting in a rather irregular appearance of the castle.
At the same time, it became clear that the castle was becoming too small to hold the functions necessary in order to function as a royal residence and seat of the administration so a series of smaller buildings began to be erected on Slotsholmen. Probably during the reign of Christian III a building was constructed on the quay of the canal in front of the castle to house the Chancellery. During the reign of Christian III and
Frederick II an arsenal was constructed by the beach south of the castle, and during the reign of Frederick II probably also a supply depot.
Under King
Christian IV
Christian IV (12 April 1577 – 28 February 1648) was King of Denmark and Norway and Duke of Holstein and Schleswig from 1588 until his death in 1648. His reign of 59 years and 330 days is the longest in Scandinavian history.
A member of the H ...
Slotsholmen saw considerable development, especially in the southern part of the island. Here a new naval harbour was established, surrounded on one side by an
Arsenal
An arsenal is a place where arms and ammunition are made, maintained and repaired, stored, or issued, in any combination, whether privately or publicly owned. Arsenal and armoury (British English) or armory (American English) are mostly ...
and on the other side by a
Supply Depot
Supply depots are a type of military installation used by militaries to store battlefield supplies temporarily on or near the front lines until they can be distributed to military units. Supply depots are responsible for nearly all other types of ...
. Other new buildings constructed were the
Stock Exchange
A stock exchange, securities exchange, or bourse is an exchange where stockbrokers and traders can buy and sell securities, such as shares of stock, bonds and other financial instruments. Stock exchanges may also provide facilities for ...
and the
Brewhouse
A brewhouse is a building made for brewing beer and ale. This could be a part of a specialized brewery operation, but historically a brewhouse is a private building only meant for domestic production.
Larger households, such as noble estates, o ...
. All four of these historic buildings are still there today.
By the time of the introduction of the
absolute monarchy in 1660, the role of Slotsholmen as the centre of administration was firmly established.
During the reign of
King Frederick III, further lack of space in the castle led to the construction in 1665-1673 of an additional building between the Supply Depot and the Arsenal. This building, also still visible today, was to house the
Cabinet of curiosities
Cabinets of curiosities ( and ), also known as wonder-rooms ( ), were encyclopedic collections of objects whose categorical boundaries were, in Renaissance Europe, yet to be defined. Although more rudimentary collections had preceded them, t ...
of the king, founded about 1650, and the
Royal Library, founded in 1648.

During the reign of
King Frederick IV, a magnificent administration building was constructed in 1716-21 next to the palace adjacent to the Supply Depot. This new building was to house the chancelleries, thus replacing the previous chancellery building situated by the canal. The new chancellery building was connected to the castle by an arched passageway, thus allowing the king to stay in close contact with his government. The Chancellery Building (also known as the ''Red Building'' or the ''Building of Colleges'') has functioned as the heart of the central administration for almost 300 years, and is today used by the
Ministry of Finance
A ministry of finance is a ministry or other government agency in charge of government finance, fiscal policy, and financial regulation. It is headed by a finance minister, an executive or cabinet position .
A ministry of finance's portfoli ...
.
In spite of many attempts and projects to replace the small and antiquated castle with a more up-to-date royal residence fit for an absolute king, the old castle continued to exist well into the 18th century. Several renovations were made, most notably by Frederick IV in 1721-29. This rebuilding thoroughly changed the irregular appearance of the castle to a more regular shape.

However, just two years after the rebuilding was completed, the Copenhagen Castle was demolished in 1731 to give room for three consecutive
Christiansborg Palace
Christiansborg Palace (, ) is a palace and government building on the islet of Slotsholmen in central Copenhagen, Denmark. It is the seat of the Danish Parliament (), the Danish Prime Minister's Office, and the Supreme Court of Denmark. Also ...
s, the two first of which were destroyed by fires (in 1794 and 1884). Parts of the first and second Christianborg Palace still remain and is integrated in the present palace. The ruins of Absalon's Castle and the Copenhagen Castle are excavated and at display today under the present Christiansborg.
Notable buildings
File:W bryghus.jpg, Christian IV's Brewhouse
File:Toejhusmuseet Istedloeven Copenhagen.jpg, Christian IV's Arsenal
Christian IV's Arsenal (Danish language, Danish: Christian IV's Tøjhus), is a historic building on Slotsholmen in central Copenhagen, Denmark. It was built by Christian IV of Denmark in 1604 as part of a grand scheme for the construction of a new ...
File:Børsen vest 2009.jpg, The entrance to Christian IV's Stock exchange on Slotsholmen
File:Børsen København.jpg, Christian IV's Stock Exchange
File:W undervisningsministeriet.jpg, The Ministry of Education
File:Det Kongelige Bibliotek.jpg, Royal Danish Library
Royal Danish Library () is a merger of the two previous national libraries in Denmark: the State and University Library in Aarhus and the Royal Library in Copenhagen
Copenhagen ( ) is the capital and most populous city of Denmark, wit ...
, Old Building, seen from the Library Garden
File:Kbh IMG 6504.JPG, Christiansborg Palace
Christiansborg Palace (, ) is a palace and government building on the islet of Slotsholmen in central Copenhagen, Denmark. It is the seat of the Danish Parliament (), the Danish Prime Minister's Office, and the Supreme Court of Denmark. Also ...
File:Thoraldsens Museum.jpg, Thorvaldsens Museum
The Thorvaldsen Museum is a single-artist museum in Copenhagen, Denmark, dedicated to the art of Danish and Icelandic Neoclassical sculptor Bertel Thorvaldsen (1770–1844), who lived and worked in Rome for most of his life (1796–1838). The ...
File:Finansministeriet.jpg, The side façade of the Chancellery building
File:Den Sorte Diamant 2.jpg, Black Diamond extension to the Royal Danish Library
Royal Danish Library () is a merger of the two previous national libraries in Denmark: the State and University Library in Aarhus and the Royal Library in Copenhagen
Copenhagen ( ) is the capital and most populous city of Denmark, wit ...
File:Christiansborg Slotskirke Copenhagen.jpg, Christiansborg Palace Chapel
Bridges
Slotsholmen is surrounded partly by Copenhagen's
Inner Harbour, partly by canals. Nine bridges connect Slotsholmen to the rest of Copenhagen, both
Zealand
Zealand ( ) is the largest and most populous islands of Denmark, island in Denmark proper (thus excluding Greenland and Disko Island, which are larger in size) at 7,031 km2 (2715 sq. mi.). Zealand had a population of 2,319,705 on 1 Januar ...
-side and
Amager
Amager ( ), located in the Øresund, is Denmark's most densely populated island, with more than 216,000 inhabitants (January 2022). The protected natural area of ''Naturpark Amager'' (including Kalvebod Fælled) makes up more than one-third of the ...
-side.
Knippelsbro
Knippelsbro is a
bascule bridge
A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- o ...
and one of several bridges over Copenhagen's Inner Harbour; others being
Langebro,
Lille Langebro,
Bryggebroen and Copenhagen's
Inner Harbour Bridge. It connects Slotsholmen to
Christianshavn
Christianshavn () is a neighbourhood in Copenhagen, Denmark. Part of the Indre By District, it is located on several artificial islands between the islands of Zealand and Amager and separated from the rest of the city centre by the Inner Harbour, ...
by extending Børsgade to Torvegade.
Marmorbroen
Marmorbroen (English: The Marble Bridge) connects Christiansborg Riding Ground Complex to Ny Vestergade that continues to Dantes Plads with the
Ny Carlsberg Glyptotek
The Ny Carlsberg Glyptotek ("ny" means "new" in Danish; "Glyptotek" comes from the Greek root ''glyphein'', to carve, and ''theke'', storing place), commonly known simply as Glyptoteket, is an art museum in Copenhagen, Denmark. The collection ...
. The bridge was constructed from 1739-45. It has a
sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
cladding with
medallion
A medal or medallion is a small portable artistic object, a thin disc, normally of metal, carrying a design, usually on both sides. They typically have a commemorative purpose of some kind, and many are presented as awards. They may be in ...
ornamentation on the sides while the top is covered with marble.
Stormbroen
Stormbroen (English: The Assault Bridge) is a small arch bridge in stone, connecting Stormgade (towards
The City Hall Square) with Vindebrogade on Slotsholmen.
The bridge is named after the
Assault on Copenhagen in 1659. It was at this very spot, where the city ramparts at that time was located, that the
Swedish troops made their principal attack. After a series of defeats, the Danish troops finally gained victory, the Swedish troops leaving 2,000 dead soldiers in front of the ramparts at Stormgade.
Various sources state that the bridge was erected in 1681 but on the side the inscription "erected in MDCLX is carved into its stone foundation. The bridge was renovated by
Martin Nyrop
Martin Nyrop (11 November 1849 18 May 1921) was a Danish architect.
Early life and education
Nyrop was born on 11 November 1849 at Holmsland Municipality, Holmsland, Ringkøbing, the son of parish priest Christopher Nyrop (1805–1879) and Helen ...
in 1918.
Højbro
Højbro (English: High Bridge) is an arch bridge in
wrought iron
Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%), or 0.25 for low carbon "mild" steel. Wrought iron is manufactured by heating and melting high carbon cast iron in an ...
, connecting Højbro Square with Slotsholmen. It is designed by
Vilhelm Dahlerup
Jens Vilhelm Dahlerup (4 August 1836 – 24 January 1907) was a Danish architect who specialized in the Historicist style. One of the most productive and noted Danish architects of the 19th century, he is behind many of the most known buildings ...
and was built in 1878. Holmens Bro and Børsbroen also used to be the work of Dahlerup but these have both been replaced.
The current bridge is not high at all. The name goes back to the wooden bascule bridge that was the first bridge to Slotsholmen.
Holmens Bro
Holmens Bro is an arch bridge built in granite in 1954 to replace Dahlerup's design from 1878.
File:Marmorbroen-03-2007.jpg, The Marble Bridge as seen from Frederiksholm Canal
File:Hoejbro Kbh.jpg, Højbro connecting Højbro Square to Slotsholmen
File:Christian IV's Bro.jpg, Christian IV's Bro
File:Knippelsbro København.jpg, Knippelsbro
File:Stormbroen, Nybrogade.jpg, Stormbroen
File:HolmensBro.jpg, Holmens Bro
Round Christiansborg Open Water Swim

Since efforts to improve water quality in Copenhagen Harbour has made the water clean enough to allow swimming, an open-water swimming competition around Slotsholmen has been revitalized.
With the course being 2,000 metres, the 10,000 metre race involves five loops. There is both a competition for amateurs who swim in the afternoon and a
FINA Marathon Swimming World Cup event with US$11,000 in prize money that takes place in the morning. The swim takes place in August and water temperatures are 18-22 °C.
The nature of the course makes it unusually good for spectators and that combined with the historical surroundings have gained it a reputation as one of the best open water swim competitions in
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
.
See also
*
Districts of Copenhagen
Districts of Copenhagen are often based on informal designations based on historic origins, often with alternative names and loosely defined boundaries. Copenhagen Municipality is divided into 10 Districts of Copenhagen#Official districts, official ...
*
List of islands of Denmark
This is a list of islands of Denmark.
Overview
There are around 1400 islands in Denmark, where about 409 of the islands are named, not including the Faroe Islands or Greenland. Some 70 of them are populated while the rest are uninhabited. Some o ...
*
References
{{Denmark islands
Bridges in Copenhagen
Canals in Copenhagen
Copenhagen city districts
Geography of Copenhagen
Islands of Denmark
Open water swimming