Cathédrale Saint-Vincent de Chalon-sur-Saône
Cathedral located in Saône-et-Loire, in France.
Each edition grades its towns against each other only.

Châteaux or heritage sites make up 5 of the 7 places on the list. Oslon itself has none of them. A drive of 5.2 km brings you to Musée Nicéphore-Niépce.
An abbey, a monastery and a house follow Cathédrale Saint-Vincent de Chalon-sur-Saône.
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 west for most of the 7 just outside.
The first 20 on the list, numbered as below. The shape is the commune of Oslon; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
5 of the 7 are châteaux or heritage sites, more than any other kind.
Dark: in Oslon. Light: in the communes within 5 km of its centre.
Look within 5 km of its centre for all 7 places listed.
Cathedral located in Saône-et-Loire, in France.
Abbey located in Saône-et-Loire, in France.
Cloister located in Saône-et-Loire, in France.
Nothing is mapped in Oslon itself; these are within 5 km of its centre.
Musée Nicéphore-Niépce, at 5.2 km, heads the 12.
MuseumMusée Nicéphore-Niépce5.2 km west, in Chalon-sur-Saône
Monastery or conventAbbaye Saint-Philibert de Tournus24 km south, in Tournus
MuseumHospices de Beaune27 km north, in BeauneChâteauChâteauChâteau de Germolles13 km west, in MelleceyChâteauChâteauChâteau de Rully17 km northwest, in RullyChâteauChâteauChâteau de Nobles29 km south, in La Chapelle-sous-BrancionChâteauChâteauChâteau de Balleure25 km south, in ÉtrignyAttractionAttractionRoute des Grands Crus32 km north, in Aloxe-CortonAttractionAttractionChâteau de Brandon34 km west, in Saint-Pierre-de-Varennes
Theme parkParc touristique des Combes39 km west, in Le CreusotChâteauChâteauChâteau de Lugny36 km south, in LugnyAttractionAttractionChâteau de la Verrerie38 km west, in Le CreusotPlaces within 40 km of Oslon with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Oslon itself, but within 5 km there are Cathédrale Saint-Vincent de Chalon-sur-Saône, Abbaye Saint-Marcel-lès-Chalon, Cloître capitulaire de Saint-Vincent and Palais épiscopal de Chalon-sur-Saône.
One, in town or within 5 km: Vis à vis.
The nearest with articles in both French and English Wikipedia: Musée Nicéphore-Niépce (5.2 km), Abbaye Saint-Philibert de Tournus (24 km), Hospices de Beaune (27 km), Château de Germolles (13 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 Oslon, 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.