20 euro note about two years before it is replaced due to wear. It is the third-smallest note, measuring 133 x 72 mm with a blue colour scheme. The twenty euro banknotes depict bridges and arches/doorways in Gothic architecture (between the 13th and 14th century CE). The twenty euro note contains several complex security features such as watermarks, invisible ink, holograms and microprinting that document its authenticity. The full design of the Europa series 20 euro banknote was revealed on 24 February 2015 and launched on 25 November 2015. The euro was founded on 1 January 1999, when it became the currency of
Euro banknotes a common theme of European architecture in various artistic eras. The obverse of the banknote features windows or gateways while the reverse bears different types of bridges. The architectural examples are stylised illustrations, not representations of existing monuments. All the notes of the initial series of euro notes bear the European flag, a map of the continent on the reverse, the name "euro" in both Latin and Greek script (EURO / ΕΥΡΩ) and the signature of a president of the ECB, depending on when the banknote was printed. The 12 stars from the flag are also incorporated into every note.