
Boeing Factory (Mukilteo, Washington) —
Housed in the world's largest building by volume, Boeing's aviation plant 25 miles north of Seattle produces 747s, 777s and 787s, and is the only commercial jet manufacturing center open to the public.

Harley-Davidson (Kansas City, Missouri) —
Harley Davidson's Kansas City plant shows visitors the complete assembly of its dream machines. The Steel Toe Tour is $35.

Fender (Corona, California) —
It's $10 for adults to tour the Fender Factory and Custom Shop in Corona, California. The guitars will set you back considerably more.

Airstream Factory (Jackson Center, Ohio) —
A visit to see shiny new Airstream trailers roll toward the open road is bound to drum up even more enthusiasm for the sleek throwback designs. Tours of the factory in Jackson Center, Ohio, are free.

Jelly Belly (Fairfield, California) —
Jelly beans wait to be packaged at the finishing room in the Jelly Belly Factory in Fairfield, California. Irregular jellybeans are separated and sold in the gift shop as "belly flops." Tours of the facility are free.

Ford Rouge Factory (Dearborn, Michigan) —
Ford Motor Company's defunct Rouge factory in Dearborn, Michigan, has been refurbished to house the F-150 assembly line. Tours are $16 for adults.

Ben and Jerry's (Waterbury, Vermont) —
Vermont's Green Mountains provide the backdrop for Ben and Jerry's environmentally friendly factory. You can walk through the "flavor graveyard" outside to reminisce about retired flavors.

Washougal Weaving Mill (Washougal, Oregon) —
Washougal Weaving Mill is one of the Pendleton mills that spin classic American garments and blankets. The wool is first dyed before the carding, spinning, weaving and finishing steps. The mill offers free weekday tours.

Huy Fong Foods (Irwindale, California) —
The Huy Fong tour in Irwindale, California, begins outside the factory, where, if you're lucky, you'll see delivery trucks filled to the brim with red jalapenos -- the key ingredient in its beloved Sriracha. Free tours run Monday through Friday.



