Église Notre-Dame de Carignan
Church located in Ardennes, in France.
Each edition grades its towns against each other only.

Nothing to visit is mapped in Osnes, but 3 places are within 5 km of its centre. They include a monastery, a fort and a château. Set 16 km out, Château de Sedan makes a day trip.
Along with Église Notre-Dame de Carignan, see a fort and a château.
Best known first: by how many Wikipedia and sister-site articles cover each place (Wikidata’s count). It isn’t a ranking of how good they are.
Head to the south for most of the 3 on the list.
The first 20 on the list, numbered as below. The shape is the commune of Osnes; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
They are all châteaux or heritage sites: 3 in all.
Dark: in Osnes. Light: in the communes within 5 km of its centre.
These 3 are within 5 km of its centre, none in town.
Nothing is mapped in Osnes itself; these are within 5 km of its centre.
Worth the drive, Château de Sedan (16 km) is first of the 11.
ChâteauChâteau de Sedan16 km west, in SedanMuseumMuseumOuvrage de La Ferté9.4 km southeast, in VillyAttractionAttractionSNCF BB 1200027 km west, in Nouvion-sur-MeuseGardenGardenJardin botanique de Sedan16 km west, in SedanFortFortOuvrage du Chesnois15 km southeast, in Thonne-le-ThilAttractionAttractionPlace Ducale35 km west, in Charleville-MézièresChâteauChâteauChâteau de Landreville33 km south, in BayonvilleFortFortOuvrage de Thonnelle20 km southeast, in MontmédyGardenGardenArboretum de Vendresse27 km west, in VendresseFortFortOuvrage de Velosnes27 km southeast, in VelosnesFortFortFort des Ayvelles32 km west, in Villers-SemeusePlaces within 40 km of Osnes with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Osnes itself, but within 5 km there are Église Notre-Dame de Carignan, Fortifications de Carignan and Lombut.
No museum or gallery is mapped in Osnes or within 5 km.
The nearest with articles in both French and English Wikipedia: Château de Sedan (16 km), Ouvrage de La Ferté (9.4 km), SNCF BB 12000 (27 km), Jardin botanique de Sedan (16 km).
From OpenStreetMap and Wikidata: named museums, galleries, châteaux, abbeys, gardens, zoos, theme parks and other visitor attractions whose mapped point lies inside the commune of Osnes, then those in the communes within 5 km of its centre, and well-known places within 40 km. Houses, ruins and gardens need a sign they’re open to visitors; places marked private, closed or disused are left out. The historic-monument link is the Culture ministry’s Mérimée record. A place that isn’t mapped isn’t listed, so this isn’t everything there is to see.
Sources: OpenStreetMap (© OpenStreetMap contributors, ODbL), Wikidata (CC0: descriptions, websites, Wikipedia articles), the Culture ministry’s Mérimée database (Licence Ouverte 2.0), IGN commune boundaries. Distances are from the commune’s centre point.
Photos from Wikimedia Commons, each under its own licence (our copy, resized).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.