Geography and Environment of Holy See

The state of Vatican City is the smallest sovereign state in the world. A tiny enclave within the city of Rome, it occupies 109 acres and is almost completely surrounded by medieval walls. As a result of the Lateran Pacts of 1929, the Italian Government granted St. Peter’s Basilica and Square and the surrounding area within the Vatican walls as the Holy See’s sovereign and independent territorial base. Besides St. Peter’s, Vatican City also includes the Apostolic Palace, administrative and residential buildings, museums, archives, and libraries, a cemetery, and gardens covering almost one-third of the entire area. Thirteen other buildings in Rome, as well as the Pope’s summer residence at nearby Castel Gandolfo, enjoy extraterritoriality under the terms of the Lateran Pacts.

Detailed geography