The garden pavilion, known as Spiegelsaal, is located outside the historic centre. Although it is now surrounded by modern buildings, at the time of its establishment this part of town featured sprawling farms, courtyards, and gardens. Wealthier townspeople began to copy the fashion of ornamental gardens, with summer houses and pavilions, similar to those found in aristocratic residences.As interesting as the property is on its own, its history is also notable. Jozef Skolonič, an entrepreneur from Croatia, leased extensive grounds and farms in Trnava and nearby surroundings. He bought one of the gardens outside the walls on the west side of the town in 1789. Two years later, he filed a request to Trnava town council for construction completion approval of a commenced garden house on his property. The city officials executing the approval found a building already under construction (first floor completed). Moreover, half of the house extended onto a public road leading to the gardens. It is assumed that this unauthorised construction was reported by one of the neighbours. Since the building did not jeopardise the use of the road, the town council approved it on the condition that the owner pay a fee of 20 golden coins. The garden house was finished in 1792. The interior paintings, resembling wooden construction covered by climbing plants and exotic animals, were meant to create the illusion of a garden gazebo. Skolonič did not own any other real estate in Trnava. The small one-story circular building could serve at most for a short stay, perhaps as a temporary refuge on a trade route.Originally, its name was not Spiegelsaal. This name was mistakenly taken from a tavern, situated only two plots away from the pavilion, called Spiegelsaal because of its dance hall walls covered with mirrors.

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