Cathédrale Saint-Jean de Belley
Cathedral located in Ain, in France.
Each edition grades its towns against each other only.

Of the 5 places to visit in and around Brens, 4 are châteaux or heritage sites. All of them lie outside Brens. Travel 12 km and you reach Abbaye royale d’Hautecombe.
Along with Cathédrale Saint-Jean de Belley, see 2 châteaux, a monastery and an attraction.
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 outermost point is Palais épiscopal de Belley, at 4.4 km.
The first 20 on the list, numbered as below. The shape is the commune of Brens; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Most common are châteaux or heritage sites: 4 of 5.
Dark: in Brens. Light: in the communes within 5 km of its centre.
5 places make the list, every one within 5 km of its centre.
Cathedral located in Ain, in France.
Carthusian monastery located in Ain, in France.
Nothing is mapped in Brens itself; these are within 5 km of its centre.
Top of the 12 day trips: Abbaye royale d’Hautecombe, at 12 km.
Theme parkWalibi Rhône-Alpes14 km southwest, in Les Avenières Veyrins-ThuellinAttractionAttractionChâteau des ducs de Savoie25 km southeast, in ChambéryChâteauChâteauChâteau d'Annecy39 km northeast, in Annecy
MuseumMusée des Beaux-Arts de Chambéry24 km southeast, in ChambéryChâteauChâteauChâteau de la Barre11 km southwest, in Brégnier-CordonChâteauChâteauChâteau de Cordon12 km southwest, in Brégnier-CordonCathedralCathedralCathédrale Saint-Pierre d'Annecy39 km northeast, in AnnecyAttractionAttractionBarrage de Génissiat38 km north, in FranclensPlaces within 40 km of Brens with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Brens itself, but within 5 km there are Cathédrale Saint-Jean de Belley, Chartreuse de Pierre-Châtel, Fort-les-Bancs and Palais épiscopal de Belley.
No museum or gallery is mapped in Brens or within 5 km.
The nearest with articles in both French and English Wikipedia: Abbaye royale d’Hautecombe (12 km), Cascade de Glandieu (8.4 km), Arc de Campanus (18 km), Cathédrale Saint-François-de-Sales (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 Brens, 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.