Arrival from Vienna: A2 to Hartberg, B54 towards Graz to the Pöllau turn-off, Birkfeld, Waisenegg.
Arrival from Graz: A2 to Gleisdorf exit, B64 towards Weiz. Roundabout before Weiz on the B72 towards Anger, Birkfeld.
From Weiz approx. 30 km. Arrival from Salzburg: S6 via Bruck, Kapfenberg to the Allerheilen im Mürztal exit. Immediately after the exit turn right towards Fischbach, Birkfeld, Waisenegg.
Detailed information on how to get there can be found
here.