On July 1, 1569, in the city of Lublin, two great European powers—Poland and Lithuania—joined together to form a single Commonwealth, a political union that would shape the region for centuries. Jan Matejko painted Union of Lublin three hundred years later, at a moment when Poland itself had vanished from the map, partitioned by neighboring empires. The painting became a rallying point for Polish national identity, celebrated not only for its historical subject but also as a symbol of hope during a time of foreign rule. Matejko’s canvas captures the tense, decisive moment when the act of union is sealed.

In the center, the Polish King Sigismund II Augustus, resplendent in royal robes, extends his hand toward the Lithuanian nobles, while bishops and senators crowd around, their faces a study in pride, anxiety, and calculation. The painter fills the foreground with lavish costumes and heraldic banners, each detail a clue to the rank and allegiance of the figures. Light pours in from the left, illuminating the king and casting the assembly in a dramatic chiaroscuro that recalls the grand historical scenes of Delacroix or David, but with a distinctly Polish palette and sense of pageantry. Commissioned by the city of Lublin, Union of Lublin was completed in 1869 and quickly became one of Matejko’s most celebrated works.

It was first exhibited in Kraków, where crowds flocked to see it, and later traveled to international exhibitions, earning acclaim for its meticulous research and emotional force. Today, the painting hangs in the National Museum in Warsaw, a centerpiece of the collection and a testament to Matejko’s lifelong mission: to paint the history of Poland as a living epic. Its survival through wars and occupations has only deepened its significance, both as a work of art and as a witness to the enduring idea of the Polish nation.