In 1781, the palace was once again bought by the State (the notable Milanese scholar Pietro Verri had an important role in convincing the authorities to buy the palace) and became the seat of administrative and tax offices.
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In the courtyard, sculptures were erected representing the Labours of Hercules and the Metamorphoses.
San Marino | Palazzo Pitti | Francesco Marino Mannoia | San Marino, California | Marino Marini | City of San Marino | Palazzo Vecchio | Dan Marino | Palazzo Pubblico | Palazzo Poggi | Palazzo dei Diamanti | Palazzo Barberini | Marino | Giambattista Marino | The Three Towers of San Marino | The Palazzo | San Marino High School | Palazzo Filangeri-Cutò | Palazzo Bianco | Montale (San Marino) | Marino Zorzato | Marino Vanhoenacker | Marino Lucas | Akademio Internacia de la Sciencoj San Marino | Tony Marino | San Marino Grand Prix | San Marino Calcio | Renato Marino Mazzacurati | Palazzo San Gervasio | Palazzo Pio |
Most of the architecture of the square is due to architect Luca Beltrami, who designed the eponymous palace, the facade of Palazzo Marino, and the Banca Commerciale Italiana building.