Palazzo San Pio X, building in Rome
Palazzo San Pio X is a modern building in Rome located on Via della Conciliazione. It was built between 1948 and 1950 by architects Marcello Piacentini and Giorgio Calza Bini, featuring clean lines and functional shapes typical of that era.
Palazzo San Pio X was built between 1948 and 1950 to designs by Marcello Piacentini and Giorgio Calza Bini, on the block between Via della Traspontina, Borgo Sant'Angelo and Piazza Pia. In 1979 the Italian state ceded it to the Holy See in exchange for the Palazzo della Dataria near the Quirinal Palace.
Palazzo San Pio X is named after Pope Pius X and reflects the Church's connection to modern city life. The building shows how the Holy See maintains a working presence in Rome while serving diplomatic and media functions today.
The building sits at the end of Via della Conciliazione with views toward the Tiber River and Castel Sant'Angelo. Visitors can observe it from several angles, particularly from Castel Sant'Angelo or the riverbank, but the interior is not open to the public.
The building is legally extraterritorial, meaning it is protected by international agreements under Holy See authority. This makes it an unusual case in Rome where a modern structure enjoys the same legal status as Vatican City itself.
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