http://web.archive.org/web/20030303053313/http://blackhillsattractions.com/bus-pics/cornpalace.jpg

The Corn Palace is located in Mitchell, SouthDakota: http://www.cornpalace.org/

Although, to be fair, the original Corn Palace was in Sioux City, Iowa, built in 1887. They built a new one every year, for about 4 years, until a bad harvest forced them to stop the practice in 1891. The first CornPalace in Mitchell was built in 1892.

Descriptions:
* http://www.frankwu.com/Corn.html
* http://www.roadsideamerica.com/attract/SDMITcorn.html = ''world's largest bird feeder''

Pictures:
* http://www.cornpalace.org/newpages/webcam.html - live web cam
* http://www.usd.edu/~mbanks/CORNPIC.HTML = postcard
* http://geoimages.berkeley.edu/GeoImages/Starrs/cowboys/CORNPAL.JPG

It's on the way to MountRushmore and WallDrug, if you're coming from the east.

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Every year, they start from scratch and put a new mural, made entirely of different grains, on the outside of the Corn Palace. As you can imagine, the risk of fire is great, so the local fire department made a rule that no flammable material is allowed on the bottom 10 feet of the palace. It's just plain old brick... -- SeanOleary