Misterius and fascinant, the money holds the power.Money have started and financed wars, have developed and crashed economies, joined countries in regions or monetary blocks, stimulated the world commerce, accelerated misbalances between countries but asked also for institutions and special regulations. The money represents the material joy of ordinary people. The creation of Euro has brought Europe into a spectaculous process of economic integration that is now difficult to asses in terms of dimension and effects. For the first time after the fall of the Roman Empire, most of the Europeans have the same currency. Few were those that in 1995 believed in the creation of the Euro, but their pessimism has been overpassed by facts. The Economic and Monetary Union is a reach and thoughtful experience. Its success shows the capacity of the Europeans and the institutions to carry on a significant project.