It was built for Princess Elizabeth, a daughter of King George III of the United Kingdom, the wife of Frederick VI, Landgrave of Hesse-Homburg.
In particular, the British princess realized her passion for garden art, which can still be experienced in the castle park today.
His son William II and the latter's wife Augusta Victoria also used the palace as a summer residence and refurbished the Royal Wing.
After Hitler came to power in 1933, he offered William II, who was living in exile in Huis Doorn in the Netherlands, a return to Germany to bring him under his control, and Homburg Palace as a residence, but the ex-Kaiser refused.
From 1947 it housed the Verwaltung der Staatlichen Schlösser und Gärten Hessen (Hesse Administration for State Castles and Gardens).