"denomination"=>"catholic","place_of_worship"=>"lourdes_grotto","religion"=>"christian","wikidata"=>"Q17456653"
"denomination"=>"catholic","disused"=>"yes","place_of_worship"=>"lourdes_grotto","ref"=>"L340","religion"=>"christian","wikidata"=>"Q66134175"
"denomination"=>"roman_catholic","description"=>"Rijksmonument since 1967 and build in 1829.","religion"=>"christian","wikidata"=>"Q3359585","wikimedia_commons"=>"Category:Calvariekapel (Houthem)"
"disused"=>"yes","place_of_worship"=>"lourdes_grotto","ref"=>"F840","religion"=>"christian","wikidata"=>"Q29510116","wikimedia_commons"=>"Category:Lourdesgrot, Valkenburg aan de Geul"
"denomination"=>"roman_catholic","place_of_worship"=>"lourdes_grotto","religion"=>"christian"