B . com ▁Official ▁Website ▁▁ ▁Category : TV B ▁dram as <0x0A> </s> ▁Het ▁Fort u yn ▁() ▁is ▁a ▁tower ▁mill ▁in ▁the ▁Netherlands ▁Open ▁Air ▁Museum , ▁Arn hem , ▁Gel der land , ▁Netherlands ▁which ▁was ▁built ▁in ▁ 1 9 2 0 ▁and ▁is ▁in ▁working ▁order . ▁ ▁History ▁ ▁Het   F ort u yn ▁was ▁originally ▁built ▁at ▁Del ft , ▁South ▁Holland ▁in ▁ 1 6 9 6 . ▁The ▁first ▁mill ▁on ▁that ▁site ▁was ▁a ▁post ▁mill ▁built ▁in ▁ 1 5 5 1 ▁and ▁demol ished ▁during ▁the ▁E ight y ▁Years ' ▁War . ▁Perm ission ▁was ▁granted ▁in ▁ 1 6 0 3 ▁for ▁a ▁replacement ▁mill ▁to ▁be ▁ere cted . ▁This ▁was ▁also ▁a ▁post ▁mill , ▁known ▁as ▁the ▁S lik m olen . ▁It ▁is ▁shown ▁in ▁the ▁painting ▁Ge z icht ▁op ▁Del ft ▁gez ien ▁van uit ▁het ▁no orden ▁by ▁Hend rik ▁Corn el isz ▁V room . ▁The ▁painting ▁is ▁in ▁the ▁Museum ▁Het ▁Pr insen hof , ▁Del ft . ▁Het ▁Fort u yn ▁was ▁thus ▁the ▁third ▁mill ▁on ▁this ▁site . ▁Cir ca ▁ 1 8 0 0 , ▁the ▁mill ▁was ▁still ▁known ▁as ▁the ▁S lik m olen , ▁gain ing ▁the ▁name ▁Het ▁Fort u yn ▁between ▁ 1 8 0 7 ▁and ▁ 1 8 1 7 . ▁The ▁mill ▁drove ▁four ▁pairs ▁of ▁mill st ones . ▁In ▁ 1 8 7 3