Château de Kerjean
16th-century fortified chateau near the town of Saint-Vougay, Brittany, France.
Each edition grades its towns against each other only.

There is no place to visit in Saint-Derrien; there are 8 within 5 km of its centre. They include 5 attractions, 2 museums and a château. Further afield lies Dassault Super-Étendard, at 34 km.
Château de Kerjean aside, the next best known are 4 attractions and a château.
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 to the southeast for most of the 8 on the list.
The first 20 on the list, numbered as below. The shape is the commune of Saint-Derrien; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Other sights lead the count with 5; 2 are museums or galleries.
Dark: in Saint-Derrien. Light: in the communes within 5 km of its centre.
8 places make the list, every one within 5 km of its centre.
Nothing is mapped in Saint-Derrien itself; these are within 5 km of its centre.
The history of Saint-Derrien → · Parks and trails in Saint-Derrien →
Head 34 km out for Dassault Super-Étendard, the best known of 12.
MuseumTour Tanguy29 km southwest, in Brest
GardenConservatoire botanique national de Brest25 km southwest, in BrestChâteauChâteauChâteau de Trémazan39 km west, in LandunvezPlaces within 40 km of Saint-Derrien with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Saint-Derrien itself, but within 5 km there are Château de Kerjean, Manoir de Mézarnou, Fouga CM-175 Zéphyr and Vought F-8 Crusader.
2 museums and galleries in town or within 5 km, including Château de Kerjean and Musée Yan' Dargent.
The nearest with articles in both French and English Wikipedia: Dassault Super-Étendard (34 km), Cairn de Barnenez (27 km), Cathédrale Saint-Paul-Aurélien de Saint-Pol-de-Léon (21 km), Château de Brest (29 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-Derrien, 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.