Quirinus Harder

Quirinus Johan Harder (13 October 1801, in Rotterdam – 21 October 1880, in Vlissingen ) was a Dutch architect best known for having designed a large number of lighthouses. He worked as a structural engineer for the Loodswezen, the Dutch organization overseeing all maritime pilots. Harder's lighthouses were made of cast iron, a new material at the time, which allowed for segmented fabrication and construction.

List of Harder's lighthouses

 * Eierland Lighthouse (Texel, 1864)
 * Nieuwe Sluis (1867)
 * Scheveningen Lighthouse (1875)
 * Short lighthouse of Westkapelle (1875)
 * Lange Jaap (Den Helder, 1877-1878)
 * Lage vuurtoren van IJmuiden (1878)
 * Hoge vuurtoren van IJmuiden (1878)
 * Bornrif (Ameland, 1880-1881)
 * Den Oever Lighthouse (1884)
 * Stavoren Lighthouse (1884)
 * Vuurduin (Vlieland, 1909)