"archaeological_site"=>"fortification","defensive_works"=>"motte","fortification_type"=>"motte","historic:civilization"=>"medieval","wikidata"=>"Q3049892","wikimedia_commons"=>"Category:Wijnandsrade Motte"
"archaeological_site"=>"roman_villa","historic:civilization"=>"roman","wikidata"=>"Q7478143","wikimedia_commons"=>"Category:Roman villa Steenland"
"archaeological_site"=>"roman_villa","historic:civilization"=>"roman","wikidata"=>"Q7478129","wikimedia_commons"=>"Category:Roman villa Op den Billich"