"artist_name"=>"Lon Pennock","material"=>"steel","tower:type"=>"observation","wikidata"=>"Q107641552","wikimedia_commons"=>"File:Landmark Lon Pennock Zuilense Ring Maarssen2.JPG"
"operator"=>"Tolbrug Nieuwerbrug","operator:designation"=>"eenmanszaak","owner"=>"College van Bruggemeesters","source:date"=>"2014-03-24","tower:type"=>"bell_tower"
"service"=>"aircraft_control","wikidata"=>"Q2052814"
"access"=>"private","operator"=>"LVNL","source:date"=>"2017-09-04","tower:construction"=>"freestanding","tower:type"=>"radar_station"
"tower:type"=>"observation","url"=>"https://www.routeyou.com/nl-nl/location/view/51125611/uitkijktoren-de-heeskijk"
"architect"=>"Jeroen Hoogstraten","tower:type"=>"observation"
"technology"=>"GSM 900;UMTS","tower:type"=>"communication"
"name:li"=>"De Vief Köp","name:nl"=>"De vijf koppen","tower:type"=>"defensive","wikidata"=>"Q22926054","wikimedia_commons"=>"Category:De Vijf Koppen (roundel)"
"tower:type"=>"defensive","wikidata"=>"Q17427780","wikimedia_commons"=>"Category:Haet ende Nijt (roundel)"
"seamark:name"=>"Kaap Engelsmanplaat","seamark:topmark:shape"=>"square","seamark:type"=>"beacon_special_purpose","tower:construction"=>"wood","tower:type"=>"beacon","wikidata"=>"Q21694301"
"access"=>"no","tower:type"=>"observation","wikidata"=>"Q17189413"