Nebergall "Knoll Crest" Round Barn

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Nebergall "Knoll Crest" Round Barn
Scott County, Iowa Round Barn.jpg
Nebergall "Knoll Crest" Round Barn is located in Iowa
Nebergall "Knoll Crest" Round Barn
Nebergall "Knoll Crest" Round Barn is located in the US
Nebergall "Knoll Crest" Round Barn
Location Telegraph Road
Blue Grass, Iowa
Coordinates 41°30′59″N 90°42′54″W / 41.51639°N 90.71500°W / 41.51639; -90.71500Coordinates: 41°30′59″N 90°42′54″W / 41.51639°N 90.71500°W / 41.51639; -90.71500
Built 1914
Architect Benton Steele
MPS Iowa Round Barns: The Sixty Year Experiment TR
NRHP Reference # 86001473 [1]
Added to NRHP June 30, 1986

The Nebergall "Knoll Crest" Round Barn is located between Davenport and Blue Grass in rural Scott County, Iowa. It was built in 1914[2] and has been listed on the National Register of Historic Places since 1986.[1]


Charles W. Nebergall owned Knoll Crest Farm when they contracted with Benton Steele to design and construct a round barn in 1914.[3] The building is a true round barn that measures 56 feet (17 m) around.[2] The bottom half of the barn is constructed in clay tile and features square windows. Red vertical board-and-batten siding covers the upper half of the barn that features rectangular windows. A driveway divides the interior circular arrangement between the horse stalls and the cattle stanchions, which ringed the outer perimeter of the main level.[4] Grain bins and feedways are located between the animals and the center drive. Separate hay chutes serviced the horse and cattle sides of the barn. In that way the horse hay and the cattle hay could be efficiently stored and the animals fed. There is no silo built into this barn. A cupola rests on top of a 2-pitch conical roof.[2] The Nebergall family sold the farm in 1992 to John Penne.[3] He re-roofed the barn in 1998 with wood shingles. The hayforks and manure track system remain in working condition.

Benton Steele[edit]

The barn was built by Benton Steele, who was a specialized builder/architect.[5] He built his first barns in the dairy districts of Indiana and Wisconsin before moving to Iowa, Nebraska and Kansas. He wrote articles in publications such as the Kimball's Dairy Farmer of Waterloo, the Breeder's Gazette of Chicago and the Hoard's Dairyman of Fort Atkinson, Wisconsin as a way to advertise his work. Nebergall Round Barn is the only known example of a round barn from his work left in Iowa.[5]


  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. 2010-11-08. 
  2. ^ a b c "Iowa Round Barn List". Dale Travis Barn List. Retrieved 2010-11-08. 
  3. ^ a b Schense, Deb (2008). Barns Around Iowa: A Sampling of Iowa’s Round Barns. Iowa City: Penfield Books. p. 105. 
  4. ^ Office of Historic Preservation - Iowa State Historical Department. "NRHP Inventory Nomination - Neberqall "Knoll Crest" Round Barn" (PDF). National Park Service. Retrieved 2015-03-30.  with photos
  5. ^ a b "NRHP Inventory Nomination - Iowa Round Barns; The Sixty Year Experiment" (PDF). National Park Service. Retrieved 2011-02-08. 

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