The Map Geek series of geocaches is for all my fellow map nerds in the caching community. All will (hopefully) have fun finding the cache. Those of you who find the map oddities and fun facts appealing, please feel free to discuss that in your cache log, adding comments, corrections and opinions as you wish.
Nebraska has been home to several world and national records, according to the Guinness Book of World Records, the National Weather Service, and others. While some of these have been superseded and/or disputed, here is a sampling. Please mention any notable oversights with your log. Is the world’s largest plow still in Gothenburg? Was it ever?

World’s largest time capsule, Seward. More information here (Roadside America). Geocache here.
World’s largest ball of stamps, Boys Town. More information here. (Boys Town site; scroll down to “Leon Myers Stamp Center.”)
World’s largest covered wagon, Milford. More information here (Roadside America). Has lost its wheels and its giant cowboy and gone through many changes.
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World’s tallest Lincoln Log structure, Lincoln. Lincoln Chamber of Commerce video here.
World’s tallest Mohawk haircut, Omaha. Video here. 27 inches. Record broken since.
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World’s longest Ultimate Frisbee game, Seward. More information here. 80 hours. Record broken since.
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Largest recovered hailstone in US history, Aurora. More information here (National Geographic). About the size of a soccer ball. (Yikes!) Record broken since (NOAA site).
World’s largest porch swing, Hebron. Geocache here.
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World’s largest (annual) Kool-Aid stand, Hastings.
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World’s largest indoor rain forest, Omaha. More information here (Henry Doorly Zoo site). Now the largest in the US; worldwide record broken.
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World’s largest rail classification complex, North Platte. More information here (wikipedia).
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World’s largest hand-planted forest, Halsey/Nebraska National Forest, near Thedford. More information here (US Forest Service site). Record disputed, as another hand-planted forest in another country may have more trees.
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World’s largest Kolache festival, Prague. Bed race video here.