Capital

Vatican City

Continent

Europe

Flag adopted

1929

Designer

Not individually credited

Holy See

Colors and meaning

• Yellow #FFE000

  One of the two Papal colors, historically drawn from the keys of Saint Peter

• White #FFFFFF

  The other Papal color, and the white cassock of the Pope

Symbolism and history

A yellow-and-white vertical bicolor bears the crossed golden and silver Keys of Saint Peter beneath the Papal tiara on its white half, adopted in 1929 when the Lateran Treaty created Vatican City as a sovereign state, making it, alongside Switzerland, one of only two square national flags in the world.

Closest-looking flags

• 

  Switzerland

  One of only two square national flags in the world, alongside Switzerland's, both centering a single emblem on a solid-colored field.

Further reading: Flag of Holy See on Wikipedia