53 Żeromskiego Street in Radom, Classical palace on Żeromskiego Street, Radom, Poland

The Sandomierz Palace (Pałac Sandomierski) at 53 Żeromskiego Street is a classicist building designed by Antonio Corazzi and erected between 1825 and 1827 under Stefan Baliński. Its fifteen-axis front elevation has three projections: the central three-axis one carries a four-column Tuscan portico with a triangular pediment, while the outer ones have niches framed by single columns and topped with attic walls. The ground floor is rusticated, and the second floor is crowned by a triglyph frieze and modillion cornice. A north wing was added during World War II.

Italian architect Antonio Corazzi designed this structure between 1825 and 1827 as the administrative seat for the newly established Sandomierz Province. It served in that capacity for decades before eventually being converted into the city's main administrative headquarters.

The building's name recalls the Sandomierz Voivodeship Commission that occupied it from 1825. On 5 November 1916, the Act of 5th November was proclaimed from its balcony. Since 1998 it has housed the Radom City Hall and delegations of Mazovian provincial institutions.

The building is accessible during business hours as it functions as the city hall and administrative center. Visitors can explore the courtyard and public areas, though certain offices may require advance notice before visiting.

The north wing was added by the German occupation authorities as part of a plan to turn the area around today's Kelles-Krauza Street into the administrative centre of the Radom District; the buildings in the style of fascist modernism were completed by 1945, but the urban plan was never fully realised.