The Euro bills represent architectural styles of seven epochs in European culture: classical, Romanesque, Gothic style, Renaissance, baroque and rococo, architectural steel-and-glass style and modern architecture, of course. For all this the certain architectural structural elements as windows, gates and bridges are pointed out. Different denominations differ are contrasted by colour and size. The higher the value the bigger the bill size.

The value of money as the medium of circulation is in its purchasing power. Purchasing capacity is not obligatory specified by inner value. It can be defined by funds holders trust.

Economic law which defines the amount of money necessary for circulation.

Money displays itself through its functions.

The history of money traces back to the times when people had to exchange things to get what they wanted. If they needed an ax they found someone who got it and exchanged it to something necessary to its owner. The same process takes place today but we give money to seller in exchange to thing we want although the trade barter remains even nowadays.