50 Litų Kaunas Castle

Kaunas Castle, the subject of this commemorative, is among the oldest surviving brick fortifications in Lithuania, dating to the 14th century and built at the confluence of the Nemunas and Neris rivers specifically to counter the Teutonic Knights' repeated incursions into the region. The castle was partially destroyed by floods and Crusader raids across the 15th century, leaving only a single tower standing — which itself stood largely neglected until 20th-century restoration work.

Lithuania's silver commemorative program accelerated sharply after EU accession in 2004, with architecture and heritage sites becoming the dominant subject matter for the 50 Litų denomination before the litas was retired upon euro adoption in 2015.