The Partagas cigar factory in Havana. They do tours but unfortunately there were none while we were in Havana but we did get to visit a factory later in the trip, in Santa Clara. Sadly, no photos were allowed and the tour was entirely in Spanish so I was only able to understand the bits that sounded like Italian! I got the general gist. One of the amazing things is that while the cigars are being rolled there's a person at the front who 'entertains' the workers by reading newspapers articles and novels to them.
To view my Cuba gallery click on the thumbnail below.