The starting point is a hewn sandstone block at the Schlossschänke bus stop. We cross the Frankeneck-Elmstein road and follow the Three Castles Trail markings through Schankenthal. Soon we reach our first stage destination, Erfenstein Castle, via a path. From here we have a beautiful view of Spangenberg Castle directly opposite. Continue along the castle path markings again and then turn left onto the forest path. After about 500 m, we continue to follow the Burgenweg markings until the junction with the road, where a bridle path begins, which we follow uphill for 300 m until a narrow path on the left leads to the car park in Breitenstein. From here we follow a steep gravel path until we reach the Breitenstein ruins, a 12th century hilltop castle with a Romanesque castle chapel. After the visit, we follow the forest path to the right downhill back to the car park and then hike in the direction of Totenkopfstraße. We pass the tracks of the Kuckucksbahn railway, reach the driveway to the Breitenstein forester's lodge and follow the forest path parallel to the Totenkopfstraße. 300 m further on, we turn left into the Alter Weinweg, which we follow to the first junction on the left. After one km we finally reach the castle well, from where it is not far to Spangenberg Castle. According to legend, it was built by "wild Kaspar", who, in order to keep the existence and location of the castle a secret, killed all the craftsmen after its completion. We descend via the Old Castle Trail and soon reach our starting point again.