We went to the Dartington Crystal factory last week (http://www.dartington.co.uk/) as Crishna makes glass things and likes glass and generally feels about glass the way I do about card making supplies (/beads/yarn/oh God I have too many hobbies). Also, they have a glass blowing experience thing and we wanted to blow glass.
The visitor centre has some interesting displays, and places to do glass painting and jewellery making (we didn't do either of those, and I'm still not 100% sure what the jewellery making thing was but unless it involved making actual beads I'm pretty sure I can do it at home), and you can walk through the factory to see Dartington products being made, so this was our major point of interest besides the glass blowing.
The blowers make between 4 and 11 types of glassware per day, and it's pretty involved and tough (not to mention hot) work.
And then we got to do the glass blowing ourselves. This is very quick but it is pretty cool.
First of all they make a mould with a glob of glass (yes, I know all the technical terms, haha), then they put more glass around the outside and that's what you blow.
And this is the finished product after cooling/finishing (I'm very proud):