{"nrhp_refnum":"84001150","name":"Jensen, Chris, Round Barn","other_names":[],"category":"building","location":{"address":"11723 W. Galena Rd.","address_restricted":false,"city":"Lena","county":"Stephenson County","state":"IL","lat":42.391827583000065,"lon":-89.83503039399994,"geom_source":"nps_gis"},"listed_date":"1984-02-23","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Agriculture"],"significance_levels":["state"],"summary":{"what_it_is":"A 60-foot-diameter round barn on a poured concrete foundation near Lena in Stephenson County, Illinois. The construction date, original owner and builder are unknown.","why_significant":"The nomination argues the barn is significant because its floor plan is unusual among round barns. Instead of wedge-shaped stalls arranged around the center, it has stalls set in parallel rows at right angles to two large loft joists. This shows an original owner who rejected a standard claimed advantage of round barns. The reviewer accepted it under criteria A and C, though with noted doubts about the documentation.","narrative":"Near Lena in Stephenson County, Illinois, a 60-foot-diameter round barn sits on a poured concrete foundation. Its main entrance, on the northeast, leads to a rectangular opening in the mow floor for hay access, while animals enter on the southeast. The barn is covered in drop siding that has been overlaid with sheet metal, and a conical roof is topped by a tall, thin cupola. Wind has pushed the cupola askew and warped the roof, but the original design remains intact. The barn matters because of its floor plan. Most round barns used wedge-shaped stalls arranged around a central point, a layout promoters said made feeding easier. Here, stalls run in linear rows at right angles to two large loft joists across the center, suggesting the original owner did not accept that claim. The owner and construction date are unknown, though the roof and cupola resemble the nearby Leek barn, built in the early twentieth century.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":["A","C"],"status_note":"Original design is intact; the roof is warped where wind pushed the cupola askew, and the siding has been covered with sheet metal.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:35.006688-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/50/8914/28891450/content/electronic-records/rg-079/NPS_IL/84001150.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28891450","wikipedia":"https://en.wikipedia.org/wiki/Chris_Jensen_Round_Barn","wikidata":"https://www.wikidata.org/wiki/Q5107010"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/stephenson-county/jensen-chris-round-barn-84001150/"}