▁newly ▁created ▁Duch y ▁of ▁Sax e - C ob urg ▁under ▁the ▁leadership ▁of ▁Duke ▁John ▁Cas imir ▁( ru led ▁ 1 5 9 6 – 1 6 3 3 ). ▁From ▁ 1 6 9 9 ▁to ▁ 1 8 2 6 , ▁it ▁was ▁one ▁of ▁the ▁two ▁capit als ▁of ▁the ▁Duch y ▁of ▁Sax e - C ob urg - Sa alf eld , ▁and ▁from ▁ 1 8 2 6 – 1 9 1 8 ▁it ▁was ▁a ▁capital ▁of ▁the ▁Duch y ▁of ▁Sax e - C ob urg - G oth a . ▁▁ ▁Ernest ▁Frederick , ▁the ▁fourth ▁Duke ▁of ▁Sax e - C ob urg - Sa alf eld , ▁moved ▁his ▁capital ▁from ▁Sa alf eld ▁to ▁Cob urg ▁in ▁ 1 7 6 4 . ▁Cob urg ▁then ▁became ▁capital ▁of ▁the ▁Duch y ▁of ▁Sax e - C ob urg - Sa alf eld ▁and ▁later ▁of ▁the ▁Duch y ▁of ▁Sax e - C ob urg ▁and ▁Goth a . ▁ ▁In ▁the ▁early ▁ 1 9 th ▁century , ▁the ▁town ' s ▁medieval ▁fort ifications ▁were ▁demol ished ▁and ▁replaced ▁by ▁par ks . ▁The ▁du ke ▁also ▁started ▁the ▁collection ▁of ▁co pper plate ▁eng rav ings ▁that ▁is ▁today ▁part ▁of ▁the ▁V este ▁Cob urg ▁museum . ▁Under ▁his ▁son , ▁Ernest , ▁the ▁ ▁with ▁what ▁is ▁today ▁the ▁Land est he ater ▁Cob urg ▁was ▁created . ▁He ▁also ▁re built