The hospital and park complex in Kobierzyn is one of the few sites of its kind both in Poland and in Europe. It was designed at the beginning of the 19th century according to the idea of a city-garden. Although there are currently plans for its complete revalorisation, the paper presents the author’s design concept of expanding the hospital park with the area of the neighbouring former arable fields, which, according to the authors, meets contemporary realities and needs. The designed park - together with the neighbouring manor buildings - is harmoniously incorporated into the whole of the hospital-park complex, forming a coherent spatial composition. The design guidelines and solutions are adapted to the existing compositional axes, Art Nouveau aesthetic canons, buildings, trees and even the water reservoir. The project incorporates the design principles of Polish calligraphic parks established at the turn of the 19th and 20th centuries, whose compositional rules dominated Polish garden art for several decades and continue to resonate today. This little-known style crowned the development of 19th-century garden art of free forms - the apparent naturalness of the forms was in fact a space fully subordinated to the designer’s efforts. It was also the first composite style that combined geometric and free forms, leaving its mark on contemporary works and continuing to fascinate today with its compositional principles. The project proves the timelessness of these principles and the desirability of employing historical solutions in landscape design.