Chapelle Saint-Jérôme d'Ax-les-Thermes
Chapel located in Ariège, in France.
Each edition grades its towns against each other only.

Look within 5 km of its centre for the 6 places to visit; none is in Ascou. Among them are 2 museums, 2 châteaux and a zoo. Château de Montségur, 17 km away, is the best-known day out.
Close behind Chapelle Saint-Jérôme d'Ax-les-Thermes are 2 châteaux, a museum and a zoo.
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 6 outside town cluster to the southeast.
The first 20 on the list, numbered as below. The shape is the commune of Ascou; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
2 are museums or galleries; châteaux or heritage sites come next with 2.
Dark: in Ascou. Light: in the communes within 5 km of its centre.
You will find all 6 within 5 km of its centre.
Nothing is mapped in Ascou itself; these are within 5 km of its centre.
Allow a day for Château de Montségur, 17 km away, the pick of 12.
MuseumChâteau de Foix35 km northwest, in FoixChâteauChâteauChâteau de Montaillou6.9 km north, in MontaillouAttractionAttractionChâteau de Puivert26 km northeast, in PuivertAttractionAttractionFour solaire d'Odeillo28 km southeast, in Font-Romeu-Odeillo-ViaChâteauChâteauChâteau de Puilaurens35 km east, in PuilaurensChâteauChâteauChâteau de Roquefixade26 km northwest, in RoquefixadeAttractionAttractionGrotte de Lombrives25 km northwest, in UssatChâteauChâteauChâteau d'Usson16 km east, in RouzeChâteauChâteauChâteau de Miglos25 km west, in MiglosChâteauChâteauChâteaux de Château-Verdun et de Gudanes18 km west, in Château-VerdunPlaces within 40 km of Ascou with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Ascou itself, but within 5 km there are Chapelle Saint-Jérôme d'Ax-les-Thermes, Château d'Orgeix, Château de Villemur and Observatoire de la Montagne.
2 museums and galleries in town or within 5 km, including Chapelle Saint-Jérôme d'Ax-les-Thermes and Observatoire de la Montagne.
The nearest with articles in both French and English Wikipedia: Château de Montségur (17 km), Grotte de Niaux (26 km), Château de Foix (35 km), Château de Montaillou (6.9 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 Ascou, 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.