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

From Olizy-sur-Chiers, the big name within reach is Château de Sedan, 26 km away. With nothing in Olizy-sur-Chiers, the list has 2 places within 5 km of its centre.
After Ouvrage de La Ferté, look out for 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.
The farthest of them, Ouvrage de La Ferté, is 3.5 km out.
The first 20 on the list, numbered as below. The shape is the commune of Olizy-sur-Chiers; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Both are museums or galleries.
Dark: in Olizy-sur-Chiers. Light: in the communes within 5 km of its centre.
2 places, all within 5 km of its centre, make the list.
Maginot Line at Villy and La Ferté-sur-Chiers (Ardennes, France).
Nothing is mapped in Olizy-sur-Chiers itself; these are within 5 km of its centre.
The history of Olizy-sur-Chiers → · Parks and trails in Olizy-sur-Chiers →
Top of the 12 day trips: Château de Sedan, at 26 km.
ChâteauChâteau de Sedan26 km northwest, in SedanFortFortOuvrage du Chesnois8.4 km east, in Thonne-le-ThilFortFortOuvrage de Thonnelle12 km east, in MontmédyChâteauChâteauChâteau de Landreville25 km southwest, in BayonvilleAttractionAttractionSNCF BB 1200035 km northwest, in Nouvion-sur-MeuseFortFortOuvrage de Velosnes18 km east, in VelosnesGardenGardenJardin botanique de Sedan25 km northwest, in SedanAttractionAttractionMonument américain de Montfaucon32 km south, in Montfaucon-d'ArgonneMuseumMuseumOuvrage de Fermont34 km east, in BeuveilleChâteauChâteauChâteau de Cons-la-Grandville35 km east, in Cons-la-GrandvilleFortFortOuvrage de Latiremont39 km east, in BaslieuxGardenGardenArboretum de Vendresse31 km west, in VendressePlaces within 40 km of Olizy-sur-Chiers with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Olizy-sur-Chiers itself, but within 5 km there are Ouvrage de La Ferté 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 (26 km), Ouvrage du Chesnois (8.4 km), Ouvrage de Thonnelle (12 km), Château de Landreville (25 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 Olizy-sur-Chiers, 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.