The action “Schmucke dein Heim” [Eng.: Beautify your home] initiated in the spring of 1943 was applicable throughout the entire grounds of KL Lublin. Numerous flower beds, carefully trimmed hedges and one of the most important works of Albin Maria Boniecki, the Column of Three Eagles, appeared as its result in field III. The other fields were also cleaned up and brought into order, all the more so as between the authorities responsible for each field, there appeared a desire to compete and stand out from others, and thus make a good impression on the camp commandant.

The creation of another sculpture was decided by the head of field II who wanted to have an ornament similar to those that could be seen in field III. In order to mobilise and encourage the prisoners to work, he proposed that everyone who took up the challenge would receive an extra portion of soup. However, there was one condition – the decoration had to arouse admiration, be unusual and exceptional, and above all better than the others, otherwise its authors would be at risk of execution. 15 prisoners from Zaklików accepted the task. They had many professionals in the field of bricklaying and stucco work in their group. Together, they erected a miniature of a medieval castle situated on a platform about half a meter high, with several towers and donjons, in which they also installed glass panes and wire mesh imitating grilles. The whole structure was surrounded by a low defensive wall and a moat. Above the gate the prisoners carved the year of the castle's creation – 1943.

The building was built in the form of a 3 m × 3 m × 2 m solid. It was large and expanded enough for the prisoners to work on it for as long as possible. They used red and white bricks, stones, as well as cement and sand mortar to make it. The tools they used were shovels and pickaxes, as well as items usually used for a completely different purpose, but to which the prisoners had the easiest access. These included boards, spoons and nails. This work not only provided them with additional food, but also protected them from beatings and transports to other camps.It allowed them to rest, regenerate and recover. What is more, the other prisoners of field II also benefited from the construction of the Little Castle, as many camp tormentors (including Anton Thumann) would come to see the works on the building and its subsequent fragments almost every day. They would sometimes order certain changes to be made, which fortunately for the prisoners only prolonged the construction process. Aleksander Zakościelny, one of the builders, called the period of the erection of the Litte Castle “the golden times,” and the building itself the symbol of peace on field II.

The Little Castle has not changed its location to this day. In order to protect it from external factors, however, it received side covers with windows through which it can be viewed, as well as a roof. In 1998, it underwent conservation. The works were carried out by students from the Academy of Fine Arts in Warsaw.