Palazzo San Callisto
The Palazzo San Callisto is a small palace in Rome and one of the extraterritorial Properties of the Holy See. The original Palazzo is located in the Piazza di Santa Maria in Trastevere, the later extensions have their entrance in Piazza di San Callisto. The entire complex is one of the areas of the Holy See regulated by the 1929 Lateran Treaty signed with the Kingdom of Italy. As such it has extraterritorial status.
The Palazzo San Callisto was named in honour of Pope Callixtus I and is now home to:
In 1990, the Palazzo was placed on the UNESCO World Heritage Register.
