The 0 Euro Souvenir Banknote "Suomenlinna - Sveaborg Maailmanperintö" (UNESCO World Heritage) LEBN 2025-2 celebrates the historic sea fortress Suomenlinna, located off the coast of Helsinki, Finland. Built in the 18th century by Sweden as a maritime defense, Suomenlinna is a remarkable example of European military architecture. Today, it is a UNESCO World Heritage site, symbolizing cultural heritage and historical significance. The banknote features detailed imagery of the fortress and carries no monetary value, serving instead as a collector’s item. Issued in 2025, it honors Finnish history while promoting tourism and appreciation of globally recognized heritage sites.