These are organized by volunteers, except for the biggest event which takes place at the Pałac Kultury i Nauki (Palace of Culture and Science) in Warsaw, and is managed by the GOCC itself.
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It was founded in 1993 by Jerzy Owsiak, Lidia Niedźwiedzka-Owsiak, Bohdan Maruszewski, and Piotr Burczyński.
Great Britain | Christmas | Great Depression | Alexander the Great | United Kingdom of Great Britain and Ireland | Kingdom of Great Britain | London Symphony Orchestra | Great Western Railway | Philadelphia Orchestra | orchestra | Great Yarmouth | Peter the Great | Great Lakes | charity | Frederick the Great | Chicago Symphony Orchestra | Royal Philharmonic Orchestra | Cleveland Orchestra | The Great Gatsby | Great Fire of London | A Christmas Carol | Christmas Eve | London Philharmonic Orchestra | George II of Great Britain | Catherine the Great | Boston Symphony Orchestra | Great Central Railway | Great Plains | Great Barrier Reef | BBC Symphony Orchestra |