Modern Laputa

Amikejo was the world's first and only state built on the Esperantist ideals, established in an odd wedge-shaped territory bordering Germany, Belgium and the Netherlands. From the Big Think website: "In 1906, Moly and Gustave Roy, a French professor – both keen Esperantists – decide to establish an Esperanto state in Neutral Moresnet. Esperanto being an artificial language developed some decades before by L.L. Zamenhof, a Polish doctor. This language, devoid of nationalistic connotations, was supposed to transcend the linguistic divides crippling Europe." The region was annexed to Belgium through the Treaty of Versailles at the war's end.