Abbaye Saint-Martin de Troarn
Abbey located in Calvados, in France.
Each edition grades its towns against each other only.

Most of what there is to see is châteaux or heritage sites: 7 of 8. None of them is inside Janville itself. A day out reaches Abbaye Royale aux Hommes, 15 km away.
Abbaye Saint-Martin de Troarn aside, the next best known are 5 châteaux.
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, Château de Banneville, is 4.5 km out.
The first 20 on the list, numbered as below. The shape is the commune of Janville; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Most common are châteaux or heritage sites: 7 of 8.
Dark: in Janville. Light: in the communes within 5 km of its centre.
You will find all 8 within 5 km of its centre.
Nothing is mapped in Janville itself; these are within 5 km of its centre.
Head 15 km out for Abbaye Royale aux Hommes, the best known of 12.
ChâteauChâteau de Caen15 km west, in CaenAbbeyAbbeyAbbaye aux Dames de Caen14 km west, in CaenMuseumMuseumMémorial de Caen16 km west, in CaenFortFortBatterie de Merville12 km north, in Merville-Franceville-Plage
AttractionChâteau de Falaise30 km south, in Falaise
AttractionCathédrale Saint-Pierre de Lisieux29 km east, in LisieuxMuseumMuseumMémorial Pegasus12 km northwest, in Ranville
MuseumMusée des Beaux-Arts de Caen15 km west, in CaenAttractionAttractionAbbaye d'Ardenne18 km west, in Saint-Germain-la-Blanche-Herbe
MuseumSite Hillman16 km northwest, in Colleville-Montgomery
MuseumMusée de Normandie15 km west, in CaenPlaces within 40 km of Janville with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Janville itself, but within 5 km there are Abbaye Saint-Martin de Troarn, Château de Saint-Pierre-du-Jonquet, Manoir de Tourpes and Château de Banneville.
No museum or gallery is mapped in Janville or within 5 km.
The nearest with articles in both French and English Wikipedia: Abbaye Royale aux Hommes (15 km), Château de Caen (15 km), Abbaye aux Dames de Caen (14 km), Mémorial de Caen (16 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 Janville, 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.