Vatican City Flag - Official National Flag and Symbol #1292593 (License: Personal Use)

The flag of Vatican City consists of two vertical bands-golden yellow on the hoist side and white on the fly side-with the coat of arms centered on the white band. The emblem features two crossed keys (one gold, one silver) tied with a red cord beneath a triregnum (papal tiara), representing the keys to Heaven entrusted to Saint Peter and the Pope’s dual spiritual and temporal authority. It is the world’s only national flag with a square aspect ratio (1:1).

Used on official Vatican websites, diplomatic contexts, encyclopedic entries, and educational resources about sovereign states or religious symbols; matches user intent for identifying national flags, learning about Catholic symbolism, or researching microstates.