0 Euro - El Prado - Madrid

Zero-euro souvenir notes have been produced under license from the European Central Bank since 2015, with Oberthur Fiduciaire holding the dominant share of that production out of their Chantepie facility near Rennes. They carry no legal tender status anywhere, but are printed on genuine banknote paper with real security features — including the hologram strip on this example — precisely to make them tactilely convincing to collectors and tourists who want something that feels like actual currency.

The Prado, opened in 1819 under Ferdinand VII, holds one of the densest concentrations of Velázquez, Goya, and Titian in existence. A souvenir note is an odd vessel for that, but the format moves units.