[4] In 1856, the Sielec estate, including the castle, was purchased by Count Andrzej Renard from Strzelce Opolskie for his son Jan.

[5] During his tenure, the castle was rebuilt, and a landscape park in the then-popular English style was established, enhancing the beauty of the site.

[8] In the 1960s and 1970s, "Renard Park" was expanded by incorporating nearby private orchards, vegetable gardens, a water settlers’ station, and parts of industrial allotments from the historic "Huldczyński steelworks".

During the redevelopment of the northeastern part of Sielec for municipal sports and cultural facilities, much of the park’s aesthetic value was lost.

The pond was filled in, many trees and shrubs were cut down, most of the asphalt pathways were paved over, and the ornamental walls and towers were demolished.

One tower stands between buildings opposite the ice rink’s main entrance, while the other is located on the left bank of the river near a house at 28 Legionów Street.

[10] What remains is the marble pedestal and adjacent square, now hosting a new monument featuring a White Eagle (the Coat of Arms of Poland) and the inscription "Freedom, Work, Dignity".