Knap of Howar
The Knap of Howar on the island of Papa Westray in Orkney , Scotland is a Neolithic farmstead which may be the oldest preserved stone house in northern Europe . 
<triplet> Knap of Howar <subj> Papa Westray <obj> located in the administrative territorial entity <subj> Orkney <obj> located in the administrative territorial entity <subj> Neolithic <obj> time period <triplet> Papa Westray <subj> Orkney <obj> located in the administrative territorial entity