If you like old tractors, try the really old stuff... the steam powered ones: http://justacarguy.blogspot.com/2009/07/parade-at-antique-gas-and-steam-engine_3729.html
or if you are a fan of John Deere tractors: http://justacarguy.blogspot.com/2009/07/parade-at-antique-gas-and-steam-engine_05.html
or if you'd like to see the skits they put on when they parade the tractors through for the visitors: http://justacarguy.blogspot.com/2009/07/parade-at-antique-gas-and-steam-engine_5903.html