On my way through Virginia I saw a tower overlooking a stream. Following curiosity I learned it was a shot tower. In colonial times, they discovered by dropping molten lead from a certain height the lead would become circular and cool before it hit the ground, or kettle of water. Towers were erected about 75 feet high for this procedure to make ammunition for firearms. In Richmond, one can go to the Shot Tower Historical State Park where, for a fee, you can take a tour of one. Pretty interesting stuff, I thought, but what the heck do I know.