Vilnius is set to reveal a significant historical discovery on 9 July, showcasing 16th-century royal artefacts from the Lithuanian-Polish dynastic era. These treasures, including burial crowns of Alexander Jagiellon, Barbara Radziwill, and Elizabeth of Austria, were hidden in the crypts of Vilnius Cathedral at the onset of World War II and rediscovered in 2024. They will be displayed at the Vilnius Church Heritage Museum for the first time in nearly a century.

The exhibition, titled "Hidden Within," connects the 2024 excavation with earlier discoveries from 1931 and 1985, detailing the artefacts' concealment, loss, and eventual recovery. Prof Andrzej Betlej, Director of the Wawel Royal Castle in Kraków, Poland, highlighted the international significance of the find, noting that most of Poland's royal regalia were lost in the 18th century. "Their rediscovery is a symbolic restoration of the memory of one of the most important periods in the history of Poland and Lithuania," he stated.

The artefacts, including three funeral crowns, a sceptre, and an orb, were originally uncovered in 1931 but hidden again as World War II approached. Despite their fragile condition due to decades in a humid environment, conservation efforts have restored them for public viewing. Dr Giedrė Mickūnaitė, curator of the exhibition, remarked on the rarity of personal royal regalia, noting their historical and artistic value.

The exhibition not only showcases these treasures but also highlights the shared dynastic history that shaped Central and Eastern Europe. A new research programme launched in May 2026 aims to uncover more of the cathedral's hidden legacy

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