If you have alot of money to waste and time to spend looking at one company's stuff, then come on down to the Hershey Chocolate Experience. Yes you can make your own chocolate bar here, sort of. You stand in line for a long time and come up to a computer screen where you get to choose what sort of extras you want in your chocolate bar. An automated assembly line begins and you get to watch a chocolate bar being made by a robot with the items that you chose. It is interesting but you pay a hefty some for one bar of chocolate. All in all, this place is fun but definitely spendy.
Chocolate World Way
Yes you can come here and watch a robot make a chocolate bar