Museum
The Royal Castle in Warsaw is a state museum and a national historical monument, which formerly served as the official royal residence of several Polish monarchs. The personal offices of the king and the administrative offices of the royal court were located in the Castle from the 16th century until the final partition of Poland in 1795. Situated in the Castle Square, at the entrance to the Warsaw Old Town, the Royal Castle holds a significant collection of Polish and European art and is the 16th most visited art museum in the world with over 1.1 million visitors in 2021. — Wikipedia