Flag of Buenos Aires

The flag of Buenos Aires was originally designed in 1580, but it was officially adopted on October 24, 1995.

History
On September 28, 1995, the City council of Buenos Aires passed ordenance 49.669, which established the city flag. The ordenance came into effect with decree 1.291 on October 24, 1995. The first article states that the official city flag features a white field with the shield designed in 1580 by Juan de Garay in its center. This flags features a crowned black eagle, with four eaglets and a colored cross in its right claw. The cross is known as the Calatrava cross, since it was used by the Military order of Calatrava in Spain.

Symbolism
The eagle represents Spanish colonization, the Calatrava cross represents evangelism, the crown represents monarchy and the four eaglets represent four cities that were founded in that period: Santa Fe, La Trinidad (Buenos Aires), Corrientes and Concepción del Bermejo.