Chartreuse du Val-Sainte-Marie
Carthusian monastery located in Drôme, in France.
Each edition grades its towns against each other only.

Nothing to visit is mapped in Saint-Martin-le-Colonel, but 5 places are within 5 km of its centre. There are 3 attractions and 2 monasteries to choose from. A longer outing takes you to Cathédrale Saint-Apollinaire de Valence, 31 km off.
Then come 3 attractions and a monastery, behind Chartreuse du Val-Sainte-Marie.
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.
Look to the north for most of the 5 just outside.
The first 20 on the list, numbered as below. The shape is the commune of Saint-Martin-le-Colonel; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Other sights lead the count with 3; 2 are châteaux or heritage sites.
Dark: in Saint-Martin-le-Colonel. Light: in the communes within 5 km of its centre.
Each of the 5 is within 5 km of its centre.
Nothing is mapped in Saint-Martin-le-Colonel itself; these are within 5 km of its centre.
The history of Saint-Martin-le-Colonel → · Parks and trails in Saint-Martin-le-Colonel →
Allow a day for Cathédrale Saint-Apollinaire de Valence, 31 km away, the pick of 12.
CathedralCathédrale Notre-Dame de Die27 km south, in DieAttractionAttractionPalais idéal36 km northwest, in HauterivesAttractionAttractionGrottes de Choranche14 km northeast, in ChorancheChâteauChâteauChâteau de l'Arthaudière15 km north, in Saint-Bonnet-de-Chavagne
ChâteauChâteau de Crussol34 km west, in Saint-Péray
MuseumChâteau de Tournon36 km west, in Tournon-sur-Rhône
ChâteauTour de Crest35 km southwest, in CrestAbbeyAbbeyAbbaye de Saint-Antoine-l'Abbaye22 km north, in Saint Antoine l'Abbaye
MuseumMusée Champollion32 km east, in VifChâteauChâteauChâteau de l'Alba30 km northeast, in L'AlbencPlaces within 40 km of Saint-Martin-le-Colonel with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Saint-Martin-le-Colonel itself, but within 5 km there are Chartreuse du Val-Sainte-Marie, Parcours pieds nus, Chartreuse du Val Sainte-Marie and Filets bondissants.
No museum or gallery is mapped in Saint-Martin-le-Colonel or within 5 km.
The nearest with articles in both French and English Wikipedia: Cathédrale Saint-Apollinaire de Valence (31 km), Abbaye Notre-Dame de Triors (18 km), Cathédrale Notre-Dame de Die (27 km), Palais idéal (36 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 Saint-Martin-le-Colonel, 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.