In the center, Bernini's Fountain of the Four Rivers (Fontana dei Fiumi) celebrates the great rivers of the four the Americas (R?­o de la Plata), Europe (Danube), Asia (Ganges), and Africa (Nile).
The great rivers of the world are represented in the Bernini's Fountain.
In theory, national currencies such as the pound, mark, and lira will all disappear, replaced by one universal tender.