The Amber Room was a world-famous chamber in the Catherine Palace near Saint Petersburg, decorated in amber panels backed with gold leaf and mirrors. Often called the 'Eighth Wonder of the World,' it was looted by the Nazis during Operation Barbarossa and transported to Königsberg Castle. In 1945, as the Red Army closed in, the panels were packed into crates and disappeared. Despite decades of searches by the KGB, private hunters, and historians, the original Amber Room has never been found. Theories suggest it was destroyed by Allied bombing, hidden in a lost mine, or even loaded onto a ship that was sunk. A reconstruction was completed in 2003, but the fate of the original remains one of the greatest mysteries of the war.