Secured before 1202, probably in the second half of the 12th century, Sayn Castle emerged and actually belongs to a three-part castle group which included the Stein estate and the Mittlere Burghaus (middle castellan’s house). In the 14th and 15th centuries, the defensive fortifications of the Castle were extended to include a zwinger and a turret. From here, the counts of Sayn ruled their estates reaching from Cologne right up to the Lahn River and in the Westerwald and on the Central Moselle - right until, in 1632, the Thirty Years’ War also battered the official residence of the family, which was known as Sayn-Wittgenstein from 1361. Today, Sayn Castle is a venue for weddings and functions. Hikers too can enjoy the view of the old ruins; the Rheinsteig and Saynsteig trails run directly beside the partially accessible Castle.