The Secrest Octagon Barn is a historic building located near Downey in rural Johnson County, Iowa, United States. It was constructed in 1883 by master builder George Frank Longerbean for Joshua Hunt Secrest as a hay barn-horse stable. The octagonal barn measures 80 feet (24 m) in diameter. It features red vertical siding and a sectional bell shaped roof that is supported by hand-laminated beams. The octagon-shaped cupola has the same roof shape as the barn. It was listed on the National Register of Historic Places in 1974.
The Fobes Octagon Barn is a historic building located south of Lanesboro, Iowa, United States. It was built in 1883, and at the time of its nomination it was one of 14 octagon-shaped barns from the 19th-century left in Iowa. The barn has a diameter of 66 feet (20 m) and features a stone foundation, and a hip roof with a square cupola on top. The modification of the roof suggests this is a "Coffine type" structure similar to others built by Lorenzo Coffin. The general purpose barn has two granaries, horse stalls, and the rest of the space is open for agricultural machinery. It was listed on the National Register of Historic Places in 1986.
The Roberts Octagon Barn built in 1883 is an historic octagonal barn located on CR W62 near Sharon Center, Johnson County, Iowa. On June 30, 1986, it was added to the National Register of Historic Places.
This is a list of the National Register of Historic Places listings in Audubon County, Iowa.
The Robert Kirkpatrick Round Barn is a historic building located near Coggon in rural Delaware County, Iowa, United States. It was built in 1919 by Robert Kirkpatrick on his own farm. The building is a true round barn that measures 60 feet (18 m) in diameter. The barn is constructed of clay tiles and features a two-pitch roof with a large hay dormer on the east side and two smaller dormers on the west and north. It is one of 16 clay tile barns that were based on a design from the Johnson Brothers Clay Works in Fort Dodge, Iowa. The use of hollow clay tile is a distinctive trait in the construction of Iowa's round barns. For many years it was used as a dairy barn before becoming a horse barn. It has been listed on the National Register of Historic Places since 2005.
The Grimes Octagon Barn is an historic building located near West Union in rural Fayette County, Iowa, United States. It was built by Joe Butler in 1880 for M.W. Grimes. The building is an octagon that measures 65 feet (20 m) in diameter. It is one of 14 known 19th-century octagon barns that still exist on an Iowa farm. The barn features red metal siding, a roof composed of wedge-shaped sections and a hay dormer. The sectional roof marks it as a Stewart type that was named for the New York farmer and agricultural editor Elliott W. Stewart, who designed the prototype in 1874. The barn 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 Lenox Round Barn is a historic building that is part of the Taylor County Historical Museum in Bedford, Iowa, United States. The true round barn was built somewhere between 1905 and 1907. The building measures 64 feet (20 m) in diameter and 55 feet (17 m) in height. It features white vertical siding, a large cupola, and a two-pitch roof. The barn was thought to have been designed and built by J.E. Cameron on his farm 5 miles (8.0 km) south of Lenox.
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 Dyas Hexagonal Barn is a historical building located near Bellevue in rural Jackson County, Iowa, United States. Built in 1921, it is a round barn measuring 50 feet (15 m) around, with red horizontal siding on a stone foundation, a tin roof, and a central wood stave silo extending through the roof. Despite the common name, the building is actually eight-sided, and is also known as the Dyas Octagonal Barn. Originally the roof was flat or almost flat; it is one of four round barns known to have been built on the same farm. It has been listed on the National Register of Historic Places since 1986.
The Charles B. Reynolds Round Barn was a historic building located near Doon in rural Lyon County, Iowa, United States. It was built in the summer of 1904. In the early 1920s, the original conical roof was damaged due to a windstorm and replaced with a gambrel roof. The building was a true round barn and featured white horizontal siding, a two-pitch sectional roof and an octagon louvered cupola. The barn has been listed on the National Register of Historic Places since 1999. The barn was razed in September 2009.
The Thomas Johnson Polygonal Barn was a historic building located near Wellman in rural Washington County, Iowa, United States. The 16-sided building measured 40 feet (12 m) in diameter. The structure was covered in red vertical siding and it was topped by a sectional conical roof, with windows on the south side and an aerator. The numerous windows and the 15 hog pens that were around its perimeter suggests that this was built as a hog barn as light and ventilation in hog barns were a concern in the early 20th-century. It was listed on the National Register of Historic Places in 1986. The barn has subsequently been torn down, and it was removed from the National Register in 2014.
The Slayton Farms-Round Barn is a historic building located near Iowa Falls in rural Hardin County, Iowa, United States. Frank Slayton had it built in 1915 for use as a dairy barn. The barn is one of 16 that was built by the Johnston Brothers Clay Works from Fort Dodge, Iowa. It is constructed of hollow clay tiles and features a gambrel roof with two different pitches and hay dormer. Two aerators flank the central silo on the roof. The interior of the barn is fashioned around the silo from which silage was shoveled to feed the cattle. An overhead track system and a bucket for hauling materials remains intact. It has been listed on the National Register of Historic Places since 1999. Purchased by Engel Family in 2023.
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 Chris Jorgensen Studio is a one-room log building, built in 1904 as an artist's studio for Chris Jorgensen in the Yosemite Valley. Jorgensen, an instructor and assistant director of the California School of Fine Arts, arrived in Yosemite in the 1890s. Jorgensen studied and depicted local Native Americans from 1899, collecting native basketwork. The National Park Service acquired the Jorgensen Studio in 1919, calling it the Yosemite Museum. Jorgensen donated his basket collection to the museum in 1923. Jorgensen's widow, Angela Ghiardelli, donated many of Jorgensen's works to the museum following his death in 1935.
The Corson Emminger Round Barn near Watertown, South Dakota, United States, is a round barn that was built during 1909–1910 by Corson Emminger. It was listed on the National Register of Historic Places in 1978.
The Thompson-Wohlschlegel Round Barn near Harper, Kansas is a round barn that was built during 1910 to 1913. It was listed on the National Register of Historic Places in 1985, and was delisted in 2020.
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.
The Buresh Farm is located west of Solon, Iowa, United States, along the north shore of Lake McBride. Its historic designation includes five frame structures, the farmhouse and four agricultural buildings. All except one of the buildings is thought to have been built around 1894. The house features a gable roof and wide eaves. It has a root cellar beneath it. The barn, granary and wash house all feature board-and-batten construction. The barn has a wide gable roof that slopes to a shed roof on its north elevation. The granary has a saltbox roof. The wash house was originally built as a summer kitchen. Although its construction date is unknown, the hog house appears to be newer than the rest based on its nonconforming shape. While not particularly unique, the farm buildings are largely unaltered and reflect a late 19th-century agricultural operation that is disappearing from Iowa. The farm was listed on the National Register of Historic Places in 1977.
The Pettigrew Barns, also known as Severtson Barns, near Flandreau, South Dakota, are barns which were built in about 1901. They were listed on the National Register of Historic Places in 2004. As of 2004 the barns were owned by Craig Severtson.
