The Ludwik Zamenhof Centre The Ludwik Zamenhof Centre The Ludwik Zamenhof Centre is a city cultural institution established in Bialystok at 19 Warszawska St. upon the motion of the President of the City. It was founded to celebrate the organization of the 94th World Congress of Esperanto that was held from 25 July to 1 August 2009 in Bialystok. The Centre was officially opened for the visitors on 21 July 2009. At the beginning The Zamenhof Centre was a branch of The Centre of Culture in Bialystok, but it has been an autonomous cultural unit since January 2011. The Zamenhof Centre offers the visitors
Ludwik Kalkstein October 1994, in Munich, Germany. Ludwik Kalkstein Ludwik "Hanka" Kalkstein, also known as Ludwik Kalkstein-Stoliński, (13 March 1920, Warsaw – 26 October 1994, Munich); was one of the better known German Gestapo agents during the Warsaw Uprising as well as a Stalinist informant following the Soviet takeover of Poland. Along with his wife (Blanka Kaczorowska "Sroka"), they became traitors to the Armia Krajowa under not just one but two consecutive totalitarian regimes. Kalkstein was responsible for the arrest and execution by the Nazis of at least fourteen Polish underground officers, including the General Stefan Rowecki. Arrested by the Gestapo in