The new 20 Euro banknote entered into circulation on November 25, 2015 as part of the Europa series. After the €5 and €10 banknote, the €20 banknote is the third one to follow. The remaining banknotes to complete the series will be introduced gradually over several years. Banknotes of the new series include a portrait of Europe, Greek mythological figure after whom the continent is named (embedded in the watermark and the hologram)
Check out Documentchecker for more banknotes and their security features