The perfume factory associated with Santa Maria Novella is more interesting to me, and free. It started as a pharmacy, selling various perfumes and herbal concoctions to ward off the plague, which killed a third to half the population in 1348 and reappeared occasionally for another century or so. Most impressive to me is a small room near the back, used as a library of books about herbs and perfumes. The walls and ceiling are covered with old frescos. The signs say no flash photography, so I rested my camera on some bookshelves and took some time exposures. Look at this Resurrection
Also, while I am at it, I highly recommend the free program GNU Image Processor to fix up distorted and poorly exposed pictures. The above picture was all rotated and distorted before I worked on it with GIMP2.