Riegersburg Castle
Riegersburg Castle is a medieval castle situated on a dormant volcano above the town of Riegersburg in the Austrian state of Styria . 
<triplet> Riegersburg Castle <subj> castle <obj> instance of <triplet> Riegersburg <subj> Austria <obj> country <triplet> Austria <subj> Styria <obj> contains administrative territorial entity <triplet> Styria <subj> Austria <obj> country