A dive team has been exploring the wreck of a sunken German warship in search of Russia's long-lost treasure.
A Polish diving team has discovered the final resting place of the missing WWII-era steamer 'Karlsruhe'.
Treasure hunters believe that the bunker could be where the Nazis stored Russia's long-lost Amber Room.
The mysterious Nazi gold train in Poland may contain an ornate room stolen from St Petersburg in 1941.
The priceless Amber Room of the Tsars was looted and hidden by the Nazis in World War 2 but may now have been found again.