Abbaye Sainte-Croix de Guingamp
Abbey located in Côtes-d'Armor, in France.
Each edition grades its towns against each other only.

4 of the 6 places to visit in and around Saint-Agathon are châteaux or heritage sites. All of them lie outside Saint-Agathon. The best-known trip out is to Abbaye de Beauport, 24 km away.
Alongside Abbaye Sainte-Croix de Guingamp you find 3 châteaux, an attraction and a museum.
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 map shows most of the 6 nearby to the west.
The first 20 on the list, numbered as below. The shape is the commune of Saint-Agathon; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Most common are châteaux or heritage sites: 4 of 6.
Dark: in Saint-Agathon. Light: in the communes within 5 km of its centre.
The list runs to 6 places, all within 5 km of its centre.
Nothing is mapped in Saint-Agathon itself; these are within 5 km of its centre.
The history of Saint-Agathon → · Parks and trails in Saint-Agathon →
Abbaye de Beauport, 24 km away, is the best known of the 9.
AttractionAbbaye de Beauport24 km north, in PaimpolCathedralCathedralCathédrale Saint-Étienne de Saint-Brieuc26 km east, in Saint-BrieucCathedralCathedralCathédrale Saint-Tugdual de Tréguier27 km north, in TréguierAttractionAttractionChâteau de Tonquédec25 km northwest, in Tonquédec
ChâteauChâteau de Quintin23 km southeast, in QuintinChâteauChâteauChâteau de la Roche-Jagu19 km north, in PloëzalChâteauChâteauChâteau de Rosanbo33 km west, in LanvellecZooZooZooparc de Trégomeur17 km east, in TrégomeurAttractionAttractionMoulin de Craca24 km northeast, in PlouézecPlaces within 40 km of Saint-Agathon with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Saint-Agathon itself, but within 5 km there are Abbaye Sainte-Croix de Guingamp, Château des Salles, Ancienne prison de Guingamp and Château de Pierre II.
One, in town or within 5 km: Maison des Potiers.
The nearest with articles in both French and English Wikipedia: Abbaye de Beauport (24 km), Cathédrale Saint-Étienne de Saint-Brieuc (26 km), Cathédrale Saint-Tugdual de Tréguier (27 km), Château de Tonquédec (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 Saint-Agathon, 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.