Prieuré de Château-l'Hermitage
Priory located in Sarthe, in France.
Each edition grades its towns against each other only.

Every one of the 7 places on the list is among the châteaux or heritage sites. Yvré-le-Pôlin itself has none of them. Beyond the town, the best known is Cathédrale Saint-Julien du Mans, 21 km off.
Prieuré de Château-l'Hermitage aside, the next best known are 4 châteaux and an abbey.
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.
Château de la Roche-Mailly marks the outer edge, 4.3 km away.
The first 20 on the list, numbered as below. The shape is the commune of Yvré-le-Pôlin; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
They are all châteaux or heritage sites: 7 in all.
Dark: in Yvré-le-Pôlin. Light: in the communes within 5 km of its centre.
Each of the 7 is within 5 km of its centre.
Priory located in Sarthe, in France.
Priory located in Sarthe, in France.
Nothing is mapped in Yvré-le-Pôlin itself; these are within 5 km of its centre.
The history of Yvré-le-Pôlin → · Parks and trails in Yvré-le-Pôlin →
The pick of the 12 is Cathédrale Saint-Julien du Mans, 21 km off.
AttractionCathédrale Saint-Julien du Mans21 km north, in Le MansAbbeyAbbeyAbbaye Saint-Pierre de Solesmes34 km west, in Solesmes
AttractionChâteau du Lude20 km south, in Le Lude
ChâteauChâteau de Grésillon35 km southwest, in Baugé-en-Anjou
MuseumMusée des 24 Heures du Mans15 km north, in Le Mans
ZooZoo de La Flèche22 km southwest, in La Flèche
MuseumMusée de Tessé21 km north, in Le MansChâteauChâteauChâteau de Baugé37 km southwest, in Baugé-en-AnjouChâteauChâteauManoir de Venevelles12 km south, in Luché-PringéFortFortEnceinte romaine du Mans21 km north, in Le Mans
GardenArboretum de la Grand Prée16 km north, in Le MansGardenGardenJardin des plantes du Mans21 km north, in Le MansPlaces within 40 km of Yvré-le-Pôlin with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Yvré-le-Pôlin itself, but within 5 km there are Prieuré de Château-l'Hermitage, Château de Montertreau, Prieuré Sainte-Marie-Madeleine d'Oizé and Château des Perrais.
No museum or gallery is mapped in Yvré-le-Pôlin or within 5 km.
The nearest with articles in both French and English Wikipedia: Cathédrale Saint-Julien du Mans (21 km), Abbaye Saint-Pierre de Solesmes (34 km), Château du Lude (20 km), Château de Grésillon (35 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 Yvré-le-Pôlin, 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.