The national park of Hainich in Thüringen, Germany offers old virgin forests. People get there for hiking but it gained another tourist magnet in 2005: A high metal path leading through the treetops. Two tracks with a length of 250 meters each are situated in the top and above the trees. It is much like the path in Bad Harzburg, Germany but also very different.
In Hainich you’ll find two rather short sections and a high tower, but also some rope bridges two climb around. It seems to be suitable for bigger children. In Bad Harzburg there is one longer path and many small items to be explored by younger children. Both tree paths are worth a visit!