| Holtkamp Round Barn | |
| Location: | Off U.S. Route 2181725 335th street. |
| Coordinates: | 40.8211°N -91.5564°W |
| Area: | less than one acre |
| Built: | 1917 |
| Builder: | B.J. Holtkamp |
| Added: | June 30, 1986 |
| Refnum: | 86001436 |
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.[1] The building is a true round barn that measures 50feet in diameter.[2] 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.