Entering Bowling Green, Ohio, from the north on I-75, you'll pass a sign advertising the town as home of the National Tractor Pull. The name says it all: competitors from around the country come to this town of 29,000 to pull heavy trailers with, well, tractors... while others - over 10,000 - watch. The sound is deafening, the activity... weird. But, you should be required to see it at least once in your life:

-fans 1
-fans 2
-fans 3
-Shoppers
-Food alley
-The main event