Ok - so my memory may be off - but at Twinings, during the Flower & Garden, I thought that they had a short tour of their tea gardens and talked about the various tea plants, etc. It's free and it's not huge or anything - but I recall enjoying it on a nice afternoon's stroll around the World. Similarly - France does a scent tour or something - again free, only during Flower & Garden, and it's brief - but they walk around their front area talking about the plants that get used in fragrances. We did that once too.