The Vatican City State is surrounded by which city?

Vatican City (also known as the Holy See) is a tiny urban, landlocked enclave surrounded by Rome, Italy.

It is the world's smallest state, located on the west bank of the Tiber River. The Leonine Wall forms the enclave's western and southern boundaries. Vatican City is the administrative center of the Roman Catholic Church; the Pope resides here in a palace west of Belvedere Park. Among Vatican City's other well-known buildings and landmarks is St. Peter's Basilica, the largest Christian church in the world. The Vatican Gardens comprise about half of the total area of Vatican City.