Ouvrage de La Ferté
Maginot Line at Villy and La Ferté-sur-Chiers (Ardennes, France).
Each edition grades its towns against each other only.

What there is to see lies just outside: 4 places within 5 km of its centre. There are 2 museums, a monastery and a fort to choose from. The trip to Château de Sedan is 19 km.
Once you have seen Ouvrage de La Ferté, try a monastery, a fort and a museum.
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.
To the southeast is where most of the 4 lie.
The first 20 on the list, numbered as below. The shape is the commune of Sailly; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Museums or galleries lead the count with 2; 2 are châteaux or heritage sites.
Dark: in Sailly. Light: in the communes within 5 km of its centre.
Nothing is inside Sailly itself; these 4 are within 5 km of its centre.
Maginot Line at Villy and La Ferté-sur-Chiers (Ardennes, France).
Church located in Ardennes, in France.
Nothing is mapped in Sailly itself; these are within 5 km of its centre.
The standout of the 12 is Château de Sedan, 19 km from town.
ChâteauChâteau de Sedan19 km northwest, in SedanAttractionAttractionSNCF BB 1200029 km west, in Nouvion-sur-MeuseFortFortOuvrage du Chesnois12 km east, in Thonne-le-ThilGardenGardenJardin botanique de Sedan19 km northwest, in SedanChâteauChâteauChâteau de Landreville28 km southwest, in BayonvilleFortFortOuvrage de Thonnelle17 km southeast, in MontmédyAttractionAttractionPlace Ducale38 km northwest, in Charleville-MézièresFortFortOuvrage de Velosnes23 km southeast, in VelosnesGardenGardenArboretum de Vendresse27 km west, in VendresseAttractionAttractionMonument américain de Montfaucon38 km south, in Montfaucon-d'ArgonneMuseumMuseumOuvrage de Fermont40 km southeast, in BeuveilleFortFortFort des Ayvelles34 km northwest, in Villers-SemeusePlaces within 40 km of Sailly with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Sailly itself, but within 5 km there are Ouvrage de La Ferté, Église Notre-Dame de Carignan, Fortifications de Carignan and Fort de Villy - La Ferté.
2 museums and galleries in town or within 5 km, including Ouvrage de La Ferté and Fort de Villy - La Ferté.
The nearest with articles in both French and English Wikipedia: Château de Sedan (19 km), SNCF BB 12000 (29 km), Ouvrage du Chesnois (12 km), Jardin botanique de Sedan (19 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 Sailly, 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.