Municipality of Budapest Flag

The flag of the Municipality of Budapest is white with red and green decorations above and below the flag, with the city's coat of arms in the center. 

The coat of arms has the same crest as on the national and the shield is red, a wave silver horizontally dividing two castles, representing Buda and Pest -- the castles are not regular heraldic ones, but a representation of actual monuments. 

Two golden lions rampant support the shield. Budapest is combined from two major parts: Buda - on the western bank of the Danube, and Pest - on the eastern bank of the Danube. Both parts were united in 1872 to one city.