The palace park is considered an outstanding example of French garden art in Germany and, together with Augustusburg and Falkenlust palaces, is a UNESCO World Heritage Site.
It is the work of the French garden artist Dominique Girard, who came to Brühl in 1727. The French garden complex with its large broderie parterre is today one of the most authentic 18th-century gardens in Europe.
The focal point of Girard's design is the avenue-lined Baroque parterre in front of the south side of the palace.
An avenue of linden trees established the connection to the Falkenlust hunting lodge. The ornamental garden was reconstructed by the Prussian Administration of State Palaces and Gardens from 1933 to 1935 according to Girard's original plan. A further revision followed in the 1980s. Today, the gardens of Augustusburg and Falkenlust are considered important examples of European garden art and are part of the "Road of Garden Art" initiative.