For centuries, the counts of Harrach have ranked among the most famous families of the Austrian monarchy. As high-ranking diplomats and church dignitaries, as well as confidants of the imperial family, they had a great influence on the development of the Habsburg Empire. In 1689, Count Ferdinand Bonaventura I. bought Bruck at the Leitha River. In 1707 his son, Count Aloys Thomas Raimund, started to rebuild the palace according to plans by Johann Lukas v. Hildebrandt.

At about the same time, preparations for the layout of a big geometric baroque garden were started. For this purpose, the first large-scale redesign efforts were carried out: marshes were drained and earth banks were built.

Around 1789, Count Johann Nepomuk Ernst Harrach, who was known as a humanist and art lover, commissioned the layout of an English landscape garden to replace the baroque ornamental gardens. The water bodies of the Leitha floodplain were regulated and integrated into the park. In the flat areas, artificial hills were built and planted with rare woods.

When strolling through the park, visitors experienced a succession of most varied moods: cheerful, bright, flowery meadows alternating with melancholic, small, shady meadows and forest trails.