Follow the herberstein castle route to graz and discover the unescolisted treasures of austria on this day tour from vienna follow a guide through the pretty streets of hartberg and pllau and gain insight into centuries of rich styrian history take in top attractions including 12th century herberstein castle and enjoy a walking tour through the unesco world heritagelisted city of graz this 12 hour tour includes round trip travel from central vienna with optional hotel pickup