L. L. Zamenhof his honour. In 1959, Unesco honoured Zamenhof in the occasion of his centenary. In 2015 Unesco decided to support the celebration of the 100th anniversary of the death of Ludwik Zamenhof. Zamenhof was 12 times nominated for the Nobel Peace Prize. His birthday, 15 December, is celebrated annually as Zamenhof Day by users of Esperanto. On 15 December 2009, Esperanto's green-starred flag flew on the Google search web page, in a commemorative Google Doodle to mark Zamenhof's 150th birthday. The house of the Zamenhof family, dedicated to Ludwik Zamenhof, and the Białystok Esperanto Centre, are sites of the Jewish Heritage
Justus Ludwik Decjusz by the "Stowarzyszenie Willa Decjusza" (Organization Decjusz's Villa), which is located in the building. Justus Ludwik Decjusz Justus Ludwik Decjusz (, ; 1485–1545) was a notable Polish burgher and diplomat of German origin in 16th-century Kraków. He served as a finance minister and secretary to the Polish king Sigismund I the Old. Originally from Alsace, Decjusz's career peaked with his appointment as the king's personal adviser and overseer of the royal mint. He was also the author of a widely circulated text "De vetustatibus Polonorum" (, "On the Ancient Origins of the Poles"), an early version of the Sarmatian myth