At that time, Feldafing was ruled by Ruodolfus de Veldovingen, a member of the Berthold von Andechs family.

In 1850, King Maximilian II, who had known the area of Feldafing since his childhood, acquired the Roseninsel, where he built a Villa in Pompeii-style and a garden house.

It was through the planning of the rotunda of roses in the Villa's garden that the Roseninsel, previously called Wörth, earned its name.

The island was also said to have served as a meeting place for the king and his cousin, the Austrian Empress Elisabeth of Bavaria.

Today the island is host to a Villa museum, the beautiful preserved gardens, and various musical and cultural events.

Another population boom took place after World War II through an influx of refugees and displaced persons.

The park and the Rose Island are currently being restored by the Bavarian Administration for State Villas, Gardens and Lakes to their original condition.