Budapest unites three cities: Buda, Obuda, and Pest. Buda is located on the left bank of the Danube, while Obuda and Pest met on the left one. By the way, the place for the construction of parliament is symbolical - the place where the cities meet. An interesting fact: the Danube is the only river where ships sail under different flags. Thus, it is the only river in the world that can be called a neutral navigable river.