What is there to see at Chocolate Museum in Cologne?

I will be spending some time with my school in Cologne next week. I heard many times about Chocolate Museum there, but I would like some opinions about it. I would like to know what is there to see and does it offer as enjoyable time is it sounds it does? Thanks for the help.

This museum is Cologne's most famous attraction. It is called the Imhoff-Stollwerck Museum, but many people recognize it as Chocolate Museum. It was founded just 12 years ago, but it already has a worldwide reputation. First you will see the pictures of cacao plants and go through the entire production process, from bean to bar! Then you will walk through a small greenhouse and see growing cocoa plants. Next you will learn about the invention of the machines which made chocolate what it is today. All visitors may look into the machines and see how each of the processes is completed. In the end, you will be handed a wafer dripping with hot liquid chocolate from the chocolate fountain.