In 1850, King Maximilian II. of Bavarian bought the island of Wörth from Keszenz Kugelmueller, a master fisherman's widow, for 3,000 guilders.
In the same year, architect Franz Kreuter was commissioned to build a royal mansion on the island and lay out the rose garden. Peter Joseph Lenné, the director of gardens at the Prussian court, planned the gardens around the little "Casino", which had been built as a summerhouse on the island between 1851 and 1853.
The horticultural jewel of the gardens was a lilac-enclosed rosarium in which hundreds of standard roses perfumed the air. The island's romantic ambience and its seclusion also appealed to King Ludwig II., who liked to pay visits to the Rose Island in the company of illustrious guests, including Empress Elisabeth of Austria, Tsarina Maria Alexandrovna and Richard Wagner.
Now that restoration work on the Casino and Gardeners' House has been completed, visitors can cross to the island by ferry from the Rondell between May and October, stroll through the historic rose garden and learn more about the history of the island on guided tours through the Casino.