In 1596, a decision was made - Warsaw will be the capital of Poland. However, a few years ago, King Sigismund III Vasa moved with his court to the castle in Warsaw, which was then "royal". Previously, the building was the residence of the Mazovian princes. In the Middle Ages, a fortress was founded on this place - the core of the future capital. As the term "capital" obliges, King Sigismund III Vasa began to expand the castle. He attracted the best Italian architects, who built a three-story building in the plan of a pentagon.→