We lost unique archival materials dating from the fifteenth to the twentieth century. Documentation of the Duchy of Warsaw, the Polish Kingdom, post-partition time, local institutions, churches, the ...

In 1807, after emerging victorious from the Battle of Friedland, and having signed the treaties of Tilsit, a Polish state was established with the help of Napoleon, known as the Duchy of Warsaw. In ...

Though several Warsaw sights (think: the Warsaw Uprising Museum and the Warsaw Uprising Monument) pay homage to Polish Jews who lost their lives during World War II, one of the city's best ...