The Thomas Reburn Polygonal Barn is an historic building located near New Albin in rural Allamakee County, Iowa, United States. It was built in 1914 as a beef cattle barn. The building measures 46 feet (14 m) in diameter. It is a 12-sided structure that features red vertical siding and a silo that extends one story through the roof. It is one of four known barns in the round barn genre that was built with a flat or near flat roof in Iowa. It has been listed on the National Register of Historic Places since 1986.
The Round Barn, Bruce Township Section 6 was located in Bruce Township, Benton County, Iowa, United States. It was built in 1914 as a general purpose barn. The building was a true round barn that measured 60 feet (18 m) in diameter. The barn was constructed of clay tile from the Johnston Brothers' Clay Works and it featured a conical roof. The structure did not have a cupola, but there was a silo that rose from the center. It was listed on the National Register of Historic Places (NRHP) in 1986.
The C.A. Rownd Round Barn is a historic building located in Cedar Falls, Iowa, United States. It was built in 1911 by C.A. Rownd. It is constructed of ashlar-faced blocks that Rownd manufactured on the site. The barn was featured in the April 1912 edition of The Farm Cement News, which was published by Universal Portland Cement. The building is a true round barn that measures 83 feet (25 m) in diameter. It has been listed on the National Register of Historic Places since 1986.
The Round Barn, Washington Township is a historic building located south of Janesville, Iowa in Black Hawk County, United States. It was built in 1917 as a dairy barn. The building is a true round barn that measures 60 feet (18 m) in diameter. The structure is constructed in clay tile and features an aerator and a two-pitch roof. It was built around a silo with a water tank on top of it. While that is typical of this type of structure, it is the only one known to exist in Iowa. It has been listed on the National Register of Historic Places since 1986.
The Spotts Round Barn is a historic building located near Charles City in rural Floyd County, Iowa, United States. It was built in 1914 as a dairy and horse barn. Its design was influenced by the Iowa Agricultural Experiment Station. The building is a true round barn that measures 55 feet (17 m) in diameter. It is constructed of clay tile from the Johnston Brothers Clay Works. It features a two-pitch roof, a large hay dormer on the north side and a 12-foot (3.7 m) central silo. The barn has been listed on the National Register of Historic Places since 1986.
The Herman Wood Round Barn is a historic building located near Iowa Falls in rural Franklin County, Iowa, United States. It was built in 1916 by Herman Wood as a cattle barn. Matt King of the Permanent Buildings Society of Des Moines acted as the building consultant. The building is a true round barn that measures 122 feet (37 m) in diameter. The barn is constructed of clay tile and features a 20-foot (6.1 m) silo that extends through the flat roof. The rather large structure is one of the more unusual round barns in Iowa. The rolled-asphalt roof is suspended by wire cables that are hooked to rods at the top of the silo. King designed the system and wrote an article concerning the barn's construction in a 1917 issue of American Carpenter and Builder. The barn has been listed on the National Register of Historic Places since 1986.
The Frantz Round Barn is a historic building that was located near Grand Junction in rural Greene County, Iowa, United States. It was built by Beecher Lamb in 1911. The true round barn measured 55 feet (17 m) in diameter. The barn was constructed in concrete block from Mid-Iowa Concrete of Grand Junction. It featured a 56-foot (17 m) tall central silo that was 16-foot (4.9 m) in diameter. The interior had a circular around the central silo on the first floor. The second floor had stalls for 12-14 horses, a circular, haymow, and granary. The barn was listed on the National Register of Historic Places since 1986. It has subsequently been torn down.
The Holtkamp Round Barn is a historic building located near Salem in rural Henry County, Iowa, United States. It was built in 1918 by its first owner B.J. Holtkamp who used the plans drawn up by Matt L. King. The building is a true round barn that measures 50 feet (15 m) in diameter. It is constructed of clay tile from Mt. Pleasant Brick & Tile Mfg. Co. of Mt. Pleasant, Iowa and features an aerator, hay carrier, and a two-pitch roof. It has been listed on the National Register of Historic Places since 1986.
The Plagmann Round Barn is an historic building located near Conroy in rural Iowa County, Iowa, United States. It was built in 1912 as a cattle barn by Charles and Richard Plagmann. The building is a true round barn that measures 100 feet (30 m) in diameter. It is one of the largest Iowa Agriculture Experimental Station/Matt King type barns in the state. It is three floored — at the bottom is the feeding floor, at the middle is the stalls and at the top is the haymow. The barn is constructed of terracotta clay tile and features an aerator, a two-pitch roof and a 16-foot central silo. It has been listed on the National Register of Historic Places since 1986.
The Polygonal Barn, Van Buren Township was a historic building located in Van Buren Township in rural Jackson County, Iowa, United States. It was built in 1920 by Gus Klenney as a sale barn. They house livestock that are shown and sold to buyers. It is not known what livestock were sold here. The building was octagonal in shape and measured 50 feet (15 m) in diameter. It was listed on the National Register of Historic Places in 1986. The structure has subsequently been torn down.
The Round Barn, Cooper Township is a historic building located in Cooper Township southwest of Mapleton in rural Monona County, Iowa, United States. It was built in 1921 by Seth Smith. An auctioneer had this barn built to sell his purebred cattle. The building is a true round barn that measures 38 feet (12 m) in diameter. The barn features white vertical siding, a conical roof, and an aerator. It has been listed on the National Register of Historic Places since 1986.
The Round Barn, Washington Township is a historic building located near Sciola in rural Montgomery County, Iowa, United States. It was built in 1917 as a hog barn. Typical of a barn built for this use in features a multitude of windows on the wall and on the cupola, which provided light and ventilation. The building is a 24-sided structure that measures 60 feet (18 m) in diameter. The barn features red vertical siding, a 12-section cupola, and a two-pitch sectional roof. It has been listed on the National Register of Historic Places since 1986.
The Eckle Round Barn is a historic building that was located near Shelby in rural Pottawattamie County, Iowa, United States. The true round barn was built by Ed Brown and George Robinson in 1928 for Richard Eckle. It has a diameter of 54 feet (16 m). The barn featured white horizontal siding, a two-pitch sectional roof, aerator and a central clay tile silo with a 14-foot (4.3 m) diameter. The barn was listed on the National Register of Historic Places in 1986. It has subsequently been torn down.
The Round Barn, Buckingham Township is an historic building located north of Traer in Tama County, Iowa, United States. It was built in 1920 as a general purpose barn. The building is a true round barn that measures 50 feet (15 m) in diameter. The structure is constructed in clay tile from the Johnston Brothers' Clay Works and features an aerator and a segmented two-pitch roof. It has been listed on the National Register of Historic Places since 1986.
The John W. Young Round Barn is an historic building located near Traer in rural Tama County, Iowa, United States. It was built in 1917 by Joe Seda as a general purpose barn. The building is a true round barn that measures 65 feet (20 m) in diameter. The structure is constructed in clay tile and features a two-pitch roof and an 18-foot (5.5 m) central silo that is 45 feet (14 m) high. It has been listed on the National Register of Historic Places since 1986.
The Octagon Barn, Otter Township is a historic building located near Milo in rural Warren County, Iowa, United States. It was built in 1900 as a horse and dairy barn. The octagon-shaped building measures 54 feet (16 m) in diameter. The structure features a tall center section with a winged shed around it. It is covered in red horizontal siding and is topped by a sectional conical roof. It has been listed on the National Register of Historic Places since 1986.
The Octagon Round Barn, Indian Creek Township is a historic building located near Iowa Center in rural Story County, Iowa, United States. It was built in around 1880 as a dairy barn. The octagon-shaped building measures 50 feet (15 m) in diameter. The modified hip roof, heavy timber framing, rectangular interior plan, and general purpose use marks this as a design influenced by Lorenzo S. Coffin, who built the first round barn in Iowa. It has been listed on the National Register of Historic Places since 1986. The barn has deteriorated significantly and it is essentially a pile of wood now.
The Round Barn, Millville Township is an historical building located in rural Clayton County, Iowa, United States. It was built in 1916 as a general purpose barn. The building is a true round barn that measures 72 feet (22 m) in diameter. It is covered in metal vertical siding and features a dome roof, a cupola with an aerator and a central silo. It is one of three round barns extant in Iowa known to have a dome roof. The barn has been listed on the National Register of Historic Places since 1986.
The Round Barn, Pilot Grove Township is an historical building located in rural Montgomery County, Iowa, United States. It was built in 1912 as a general purpose barn. The building is a true round barn that measures 60 feet (18 m) in diameter. It is the type that was promoted by the Illinois Agricultural Experiment Station. The barn is covered in white vertical siding and features a two-pitch roof, a small dormer on the south side and an 18-foot (5.5 m) central silo. It has been listed on the National Register of Historic Places since 1986.
August Nus Polygonal Barn is a historic building located east of Arlington, Iowa, United States. Built in 1906, this was one of four flat roofed barns that were known to exist in Iowa, and it was the oldest of the four. The 12-sided structure with horizontal wood siding was built around a central silo that extends above the barn. Eventually, it had a cone shaped roof. The barn is 60-foot (18 m) in diameter, and the silo is 14 feet (4.3 m) in diameter. The barn was listed on the National Register of Historic Places in 1986.
