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

The best-known day out from Blagny is Ouvrage de La Ferté, 5.6 km away. What there is to see lies just outside: 2 places within 5 km of its centre. Look for a monastery and a fort.
The other best-known place is a fort.
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.
The map ends at Fortifications de Carignan, 1.8 km out.
The first 20 on the list, numbered as below. The shape is the commune of Blagny; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Both are châteaux or heritage sites.
Dark: in Blagny. Light: in the communes within 5 km of its centre.
You will find both within 5 km of its centre.
Church located in Ardennes, in France.
Nothing is mapped in Blagny itself; these are within 5 km of its centre.
Ouvrage de La Ferté, at 5.6 km, heads the 12 day trips.
ChâteauChâteau de Sedan19 km northwest, in SedanFortFortOuvrage du Chesnois12 km southeast, in Thonne-le-ThilAttractionAttractionSNCF BB 1200030 km west, in Nouvion-sur-MeuseGardenGardenJardin botanique de Sedan19 km northwest, in SedanChâteauChâteauChâteau de Landreville30 km southwest, in BayonvilleFortFortOuvrage de Thonnelle17 km southeast, in MontmédyAttractionAttractionPlace Ducale37 km northwest, in Charleville-MézièresFortFortOuvrage de Velosnes24 km southeast, in VelosnesGardenGardenArboretum de Vendresse28 km west, in VendresseAttractionAttractionMonument américain de Montfaucon39 km south, in Montfaucon-d'ArgonneMuseumMuseumOuvrage de Fermont40 km southeast, in BeuveillePlaces within 40 km of Blagny with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Blagny itself, but within 5 km there are Église Notre-Dame de Carignan and Fortifications de Carignan.
No museum or gallery is mapped in Blagny or within 5 km.
The nearest with articles in both French and English Wikipedia: Ouvrage de La Ferté (5.6 km), Château de Sedan (19 km), Ouvrage du Chesnois (12 km), SNCF BB 12000 (30 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 Blagny, 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.