Leonardo's Workshop is a wonder in Civilization Revolution. Leonardo's Workshop can be built when the player discovers Invention. When completed, it upgrades all the player's units to the most advanced level they have discovered. For example, if the player has discovered the Gunpowder technology and builds this wonder, all of his or her Archers and Pikemen will become Riflemen. Horsemen, Knights, and some upgraded Warriors and Legions (if they have March, Blitz, or Infiltration) can become Tanks. Archers, Warriors, Pikemen, and Riflemen can become Modern Infantry. Galleys, Triremes, and Galleons can become Cruisers, but not Battleships. Any embarked units will also upgrade (except the Ranger Militia, which remain unchanged). Catapults, Trebuchets, and Cannons can become Artillery units. Ai