I visited my daughter in Boston and we finally made our trip to Sam Adams pilot plant. Very interesting and got FREE BEER! Also bought the new Sam Adams perfect beer glass that is only for sale at the brewery. (So they say) The last pic is the four stage mixing kettles that creates the beers you ultimately end up buying from the four breweries around the country. Did you know that Sam Adams uses a four stage brewing process while most beers are 3 stage?