"Leonardo Da Vinci designed triple barrel canon has been found in Croatia.
The 15th century canon was actually found four decades ago when some school kids informed the museum in the southern town of Benkovac of what they had found in the fortress of Klicevica. Archeologists have only recently discovered the canon was designed by famous Leonardo Da Vinci.
Archeologists are still double checking whether this was Da Vinci's only original canon left in the world. They know for sure that the triple barrel canon in Da Vinci's museum in Milan, Italy was only a replica.
The original Leonardo Da Vinci's bronze triple barrel canon has now been exhibited in a museum in Benkovac."Croatian Times Online News