The Secret of Rosenborg Castle: Christian IV’s Royal Toilet

Rosenborg Castle, the picturesque Renaissance building in the heart of Copenhagen, is far more than just a 17th-century architectural masterpiece. It tells stories from Denmark’s glorious past – from magnificently designed rooms to the subtle details of the kings’ everyday lives. One of these fascinating details is hidden behind an unassuming name: ‘The Secret’. This is the historic toilet of King Christian IV, which was designed specifically for the monarch and, in both its function and its name, embodies a touch of courtly discretion at a time when privacy was anything but a given.

A royal building and its illustrious ruler – Rosenborg Castle was built between 1606 and 1624 at the behest of King Christian IV, one of Denmark’s most famous monarchs. Christian IV was known not only for his strategic decisions and political foresight, but also for his extravagant lifestyle. The palace originally served as a summer residence and is a prime example of Danish Renaissance architecture. Particularly noteworthy are the elaborate decorations and the well-thought-out layout, which catered to both the king’s ceremonial and private needs. A visionary ruler such as Christian IV insisted that even the seemingly most trivial aspects of his life be characterised by style and functionality. This brings us straight to an unusual detail: his personal bathroom, a feature that could have been considered revolutionary at the time.

‘The Secret’: A Toilet with a History – The royal toilet, known by the discreet name ‘The Secret’, was a private retreat for the monarch and illustrates how the aristocratic elite defined hygiene and comfort in an era that was rather rudimentary by today’s standards. The name ‘The Secret’ is more than just a clever euphemism; it underlines the exclusivity and discretion associated with this facility. Toilets were by no means commonplace in the 17th century, and many people – even wealthy citizens – still used simple chamber pots or pit latrines. The toilet at Rosenborg Castle was a small, secluded room created specifically for King Christian IV. It consisted of an elaborately carved wooden chair with a built-in waste receptacle. Such a design was not only more comfortable and hygienic than the common alternatives, but also reflected the technological progress and sophistication enjoyed by the royal family at that time. Furthermore, the layout of the room bears witness to careful planning: the room was strategically positioned to ensure access to fresh air whilst maintaining privacy.

Hygiene and Innovation in the Royal Household – Whilst we regard toilets today as an everyday necessity, the design and use of such a room in the 17th century were a symbol of luxury. Hygiene was still a largely neglected issue at that time, even amongst the highest social classes. For many people, sanitary facilities consisted either of makeshift pits or of vessels that had to be emptied regularly. The air in towns was often permeated by unpleasant odours, as waste and excrement were usually disposed of improperly. At Rosenborg Castle, however, Christian IV set new standards. His ‘secret’ represented an early form of what we now know as a bathroom. It bore witness not only to advancing technical knowledge, but also to a new understanding of personal hygiene and dignity within the monarchy. The room was designed to allow for discreet disposal, thereby preserving the king’s privacy – a luxury denied to most people of his time.

Rosenborg Castle and the significance of ‘The Secret’ – In addition to the historic toilet, Rosenborg Castle houses numerous other exhibits that bring the history of the Danish monarchy to life. Here, visitors can marvel at the magnificent crown jewels and the kings’ regalia, and gain an insight into life at the royal court in days gone by. ‘The Secret’ lends this narrative a particularly intimate and human dimension. It serves as a reminder that even great monarchs are, ultimately, only human – with the same basic needs as their subjects. For historians, this relic also offers insights into the cultural and social development of hygiene in Europe. It raises the question of the extent to which aristocratic and royal innovations influenced the everyday lives of the general population, and how advances in sanitary infrastructure transformed society over the centuries. Although Christian IV was not personally responsible for the breakthrough in modern sewage technologies, his palace did help to raise awareness of hygiene as an important aspect of royal residences.

Background and further interesting facts – Christian IV was known not only for his political and military ambitions, but also for his passion for art and architecture. Every detail in Rosenborg Castle, whether large or small, reflects his personal touch. Yet ‘The Secret’ is distinguished by its intimate character – a rare example of how historic buildings can reveal even the most private aspects of past ways of life. Another interesting point is the question of how this room ultimately came to be named as such. Historical texts and archive documents suggest that the term ‘Secret’ was an elegant euphemism for the room’s function, which served to preserve the dignity of the nobility. Such euphemistic terms were quite common in the past, particularly when it came to addressing the subject of personal hygiene in aristocratic circles.

A fascinating piece of history – ‘The Secret’ at Rosenborg Castle may seem unremarkable at first glance, yet it tells a unique story that combines the simple act of hygiene with royal splendour. It symbolises the fusion of progress and tradition that continues to characterise Rosenborg Castle to this day. Anyone visiting the castle should not only admire the sparkling crown jewels or the imposing halls, but also pause for a moment to appreciate this small yet significant part of history. For “The Secret” shows that even kings are defined not only by power and prestige, but also by the everyday necessities of life. Rosenborg Castle is now one of Copenhagen’s main attractions and is explored by thousands of visitors every year. ‘The Secret’ never fails to amaze visitors and bring a smile to their faces – a perfect example of how historical details can add a very special touch and keep the past alive.