After World War II the building served as the seat of the Ministry of Culture and Art (Ministerstwo Kultury i Sztuki).

It now houses the Ministry of Culture and National Heritage (Ministerstwo Kultury i Dziedzictwa Narodowego).

[2] A new building was commissioned by Ernest Denhoff, and construction began in 1693 under architect Giovanni Pioli.

In 1760 the building façade was refashioned and new alcove outbuildings and two wings facing the street were added, finished with storeyed pavilions with mansard roofs based on plans by Jakub Fontana.

The building was set back from the street by a courtyard, protected by a wrought-iron fence with a gate.