Vatican City
The name was first used in the Lateran Treaty, signed on 11 February 1929, which established the modern city-state. The name is taken from Vatican Hill, the geographic location of the state. "Vatican" is derived from the name of an Etruscan settlement, "Vatica" or "Vaticum" meaning garden, located in the general area the Romans called "vaticanus ager", "Vatican territory".
Phủ Cam Cathedral
The head of the Roman Catholic Church established a Resident Superior Head Office of the Vatican in Vietnam (which oversaw Vietnam, Thailand, Cambodia and Laos together) next to the former cathedral in Huế (that was demolished to make way for the current Phủ Cam Cathedral) on May 20, 1925. This office was then moved to Hanoi in 1951.