This former mansion of the Herren von Reiffenberg dates back to the middle ages. In 1848 Prince Ludwig Adolph Friedrich von Sayn-Wittgenstein-Berleburg purchased the manor and had it turned into a neo-gothic palace by François Joseph Girard, who later was to become the main architect at the Louvre in Paris.The palace, almost completely destroyed near the end of World War II, was completely restored in different phases. Since the completion of the construction works in summer 2000, the exterior of the palace resembles the original neo-gothic appearance. Together with the castle hill and the park the neo-gothic Schloss Sayn is the centerpiece of a romantic ideal landscape. A museum has been created inside the castle, while the surrounding park draws its special charm from a multitude of rare trees, the lake with its fountain, an artistic grotto, the ruin of a baroque pavillion, a Virgin Mary-chapel and the creeks Sayn and Brex, which surround the area. Main attraction in this park today is the Garden of the living Butterflies, where visitors can take a journey into a little tropic paradise with colourful flourish of exotic butterflies.