Abbaye Saint-Nicolas-des-Prés
Abbey located in Aisne, in France.
Each edition grades its towns against each other only.

Nothing is mapped in Châtillon-sur-Oise, but 3 places to visit are within 5 km of its centre. The mix takes in 2 museums and an abbey. Cathédrale Notre-Dame de Laon lies 29 km out, the pick for a day trip.
The rest of the best known are 2 museums.
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 stretches to Musée la maison de Marie-Jeanne, 4.3 km away.
The first 20 on the list, numbered as below. The shape is the commune of Châtillon-sur-Oise; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Most common are museums or galleries: 2 of 3.
Dark: in Châtillon-sur-Oise. Light: in the communes within 5 km of its centre.
All 3 on the list lie within 5 km of its centre.
Nothing is mapped in Châtillon-sur-Oise itself; these are within 5 km of its centre.
The history of Châtillon-sur-Oise → · Parks and trails in Châtillon-sur-Oise →
Best known of the 12 within reach is Cathédrale Notre-Dame de Laon, at 29 km.
AttractionCathédrale Notre-Dame de Laon29 km southeast, in LaonChâteauChâteauChâteau de Coucy31 km south, in Coucy-le-Château-AuffriqueAttractionAttractionCathédrale Notre-Dame de Noyon38 km southwest, in NoyonAbbeyAbbeyAbbaye d'Origny7.2 km northeast, in Origny-Sainte-BenoiteAttractionAttractionAbbaye de Prémontré27 km south, in PrémontréAttractionAttractionVerziau de Gargantua17 km east, in Bois-lès-PargnyMuseumMuseumWolfsschlucht II38 km south, in MargivalChâteauChâteauChâteau de Ham26 km west, in Ham
MuseumHistorial de la Grande Guerre38 km northwest, in PéronneAttractionAttractionChâteau de Guise19 km northeast, in GuiseAbbeyAbbeyAbbaye Saint-Martin de Laon29 km southeast, in LaonMuseumMuseumMusée Matisse36 km north, in Le Cateau-CambrésisPlaces within 40 km of Châtillon-sur-Oise with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Châtillon-sur-Oise itself, but within 5 km there are Abbaye Saint-Nicolas-des-Prés, Musée Condorcet and Musée la maison de Marie-Jeanne.
2 museums and galleries in town or within 5 km, including Musée Condorcet and Musée la maison de Marie-Jeanne.
The nearest with articles in both French and English Wikipedia: Cathédrale Notre-Dame de Laon (29 km), Château de Coucy (31 km), Cathédrale Notre-Dame de Noyon (38 km), Abbaye d'Origny (7.2 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 Châtillon-sur-Oise, 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.