Børsen

• 1. Introduction

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  Børsen, the old bourse of Copenhagen, stood for nearly four centuries as one of the most recognizable buildings in Denmark. Then, on the 16th of April 2024, fire tore through its copper roof during renovation work, and the Dragon Spire that had twisted above the city since 1625 came crashing down. The question the smoke left behind was the one Danes had never expected to face: how do you rebuild something that took decades to build the first time, and what does it mean when a building carries that much of a city's identity inside its walls?

  Børsen sits on the island of Slotsholmen, directly next to Christiansborg Palace, the seat of the Danish Parliament. It was built between 1619 and 1640 under King Christian IV, and it became a leading example of the Dutch Renaissance style in Denmark. For nearly four hundred years it served first as a commodity marketplace, then as a stock exchange, and finally as the headquarters of the Danish Chamber of Commerce. This documentary traces how a building built on unstable ground became a national landmark, what it housed, why the fire that destroyed its spire hit Denmark the way it did, and what a 2029 reconstruction deadline actually requires.

• 2. Building on Unstable Ground

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  Christian IV's plan for Børsen was inseparable from a larger ambition: to make Copenhagen the commercial centre of Northern Europe. The chosen site lay on the north side of an embankment connecting Copenhagen to the newly planned market town of Christianshavn, itself built on reclaimed land off the coast of Amager. Before a single wall could rise, the ground had to stabilize.

  The king first charged the architect Lorenz van Steenwinckel with the design, but Steenwinckel died shortly after receiving the commission. The assignment passed to his brother, Hans van Steenwinckel. Construction began in 1620 and moved quickly: the main structure was largely complete by 1624. The spire followed in 1625, and the last details of the east gable were finished in 1640.

  The finished building was roughly 128 metres long and 21 metres wide. On the ground floor it contained 40 trading offices. Above them, one large room occupied the upper floor. The building was in active use as a marketplace during the late 1620s, almost immediately after its shell was complete. Christian IV had wanted a place where trade could be organized and taxed; what he got was an architectural statement that carried the Dutch Renaissance into the Danish capital.

• 3. Four Dragons, Three Crowns

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  The Dragon Spire that topped Børsen was not a conventional church steeple or a plain civic tower. Installed in 1625, it was designed as the intertwined tails of four dragons, spiraling upward to a height of 56 metres. At the very top sat three crowns, representing the kingdoms of Denmark, Norway, and Sweden.

  The dragons were designed by the fireworks master of Christian IV, and their purpose was explicitly protective: they were meant to guard the building against enemies and fire. The fact that the spire was eventually destroyed by fire carries an irony that Danes noted quickly after the 2024 disaster.

  By 1775, the original spire showed enough structural deterioration that a new one was erected in a similar but not identical form. That replacement stood for the next two and a half centuries. The building's architects, the van Steenwinckel brothers, had produced a structure that outlasted almost every contemporary building around it, including Christiansborg Palace, which burned down several times. A restoration by Nicolai Eigtved in 1745 addressed general decay, and an interior renovation in 1855 by architect Harald Conrad Stilling updated the inside. Through all of it, the spire remained the building's defining feature.

• 4. Ownership, Commerce, and Conflict

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  In 1647, Christian IV sold Børsen to the merchant Jacob Madsen for 50,000 Danish rigsdaler. The building changed hands again when Madsen's widow found she could no longer afford to maintain it; Frederick III reacquired it from her. That cycle of royal ownership, private sale, and royal recovery reflected the building's odd position as simultaneously a public institution and a piece of taxable property.

  The next major transfer came in 1857, when Frederick VII sold Børsen to Grosserer-Societetet for 70,000 rigsdaler. The building continued to function as the seat of organized commerce, housing the Danish stock market until 1974.

  On the 11th of February 1918, the building became the scene of a confrontation that had nothing to do with trade in the conventional sense. Unemployed anarchists, motivated by rising inequality, stormed Børsen and attacked stockbrokers inside. It was one of the more dramatic episodes in a building that had spent centuries facilitating the transactions its attackers blamed for their situation. After the stock exchange relocated in 1974, the building passed to the Danish Chamber of Commerce, known as Dansk Erhverv, which used it as its headquarters up to and including 2024.

• 5. Art Inside the Bourse

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  Børsen accumulated a substantial art collection over its centuries of use. The holdings included a large number of individual portraits and group portraits, as well as Lorenz Frølich's four cartoons in charcoal depicting the virtues of work, justice, courage, and love.

  The most prominent single work was Peder Severin Krøyer's large group portrait titled From Copenhagen Stock Exchange, painted in 1895. Krøyer was a Skagen Painter, the celebrated community of Danish and Scandinavian artists who worked in the northern fishing village of Skagen. A newer exchange painting by Thomas Kluge depicted the 13 committee members of the Chamber of Commerce.

  Other works in the collection included C. F. Høyer's painting Christian IV giver Tyge Brahe en guldkæde from 1810, Anton Melbye's Marinebillede from 1863, Christian Mølsted's Søstykker from 1890, and William Scharff's Badende ved stranden from 1939. The collection spanned more than a century of Danish art and was woven into the building's function as a place where commerce and civic identity overlapped. When fire broke out in April 2024, the fate of these works became one of the most urgent questions of the crisis.

• 6. The 2024 Fire

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  Fire broke out on the 16th of April 2024 during renovation work on the copper roof of Børsen's main building. The scaffolding surrounding the structure caught fire as well, which blocked firefighters from reaching the flames directly. The copper roof, rather than helping, contained the heat and made it harder to extinguish. Military personnel were deployed on site alongside civilian emergency services. Additional machinery was brought in to remove sections of the roof so that water could penetrate.

  The facades were in danger of collapsing throughout the blaze, because the building's primary structural material is wood. A part of the north facade and a section of the west gable did collapse, on the 18th of April. The iconic Dragon Spire fell during the fire itself.

  Several hundred historic artworks were rescued by staff, emergency workers, and passers-by who entered the burning building. Krøyer's 1895 group portrait and Thomas Kluge's exchange painting were among the works brought out. A two-tonne bust of King Christian IV was not recovered. The National Museum sent 25 employees immediately to assist with the retrieval. Rescued artworks were moved temporarily to the parliament building and the Danish National Archives.

  Brian Mikkelsen, CEO of the Danish Chamber of Commerce, stated that the building would be rebuilt regardless of the cost. Deputy Prime Minister Troels Lund Poulsen described the fire as "our own Notre Dame moment." The comparison was precise in one respect: the Børsen fire occurred five years and one day after the Notre-Dame fire in Paris, which had also destroyed that building's roof and spire during renovation work. King Frederik X noted in a public statement that Børsen had stood as a distinctive landmark of Copenhagen for 400 years. Police concluded their investigation on the 12th of November 2024, ruling out criminal acts but unable to determine the exact cause.

• 7. Reconstruction

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  Reconstruction began on the 26th of September 2024, when King Frederik X laid a foundation stone. The stated intention from the builders is to use the same categories of materials that were available in the 17th century. More than 800,000 handmade red bricks have been ordered from Germany and Poland. Nearly 900 pine trees are being sourced from Denmark and Sweden. Recycled copper is coming from Finland.

  As of the summer of 2025, workers were removing the damaged copper cladding from the roof so that the wooden structural elements below could be replaced. The copper itself presents a challenge that goes beyond construction timelines: it may take up to 70 years for the replacement copper roof to develop the patina that the original had accumulated. The current projected completion date for the building is 2029. Whether the rebuilt Dragon Spire will eventually look as weathered as the one it replaces is a question that reaches well past that deadline.