Excavations at Medieval Vyborg Castle Reveal Secrets of “Hidden” Passageway - Smithsonian

Smithsonian
Excavations at Medieval Vyborg Castle Reveal Secrets of “Hidden” Passageway
Smithsonian
In the relative peace of interwar Europe, Finnish architect Otto-Iivari Meurman recorded the discovery of a spiral staircase leading to an underground chamber of the centuries-old Vyborg Castle. But with the outbreak of World War II, the medieval ...