0 Euro - Deutsches Spionagemuseum Berlin

The zero-euro souvenir note program, administered by the Paris-based company Oberthur Fiduciaire under license from the European Central Bank, has issued hundreds of collector pieces tied to museums, tourist sites, and cultural institutions across Europe since 2015. Germany entered the program relatively late. These notes are legal tender in name only — the ECB permits the denomination precisely because no one can profit from redeeming a note worth nothing, which neatly sidesteps counterfeiting concerns while allowing the format to be commercially exploited.

The Deutsches Spionagemuseum Berlin, opened in 2015 near Potsdamer Platz, occupies ground that was itself a Cold War fault line — the museum sits within walking distance of where the Wall once divided the city's intelligence communities.