Château de Guilleragues
Castle in Saint-Sulpice-de-Guilleragues, France.
Each edition grades its towns against each other only.

Nothing is mapped in Sainte-Gemme, but 3 places to visit are within 5 km of its centre. They include 2 châteaux and a gallery. Further afield lies Château de Roquetaillade, at 30 km.
After Château de Guilleragues come a château and a gallery.
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.
On the map, most of the 3 sit to the northwest.
The first 20 on the list, numbered as below. The shape is the commune of Sainte-Gemme; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Châteaux or heritage sites lead the count with 2 of 3.
Dark: in Sainte-Gemme. Light: in the communes within 5 km of its centre.
3 places, all within 5 km of its centre, make the list.
Nothing is mapped in Sainte-Gemme itself; these are within 5 km of its centre.
The history of Sainte-Gemme → · Parks and trails in Sainte-Gemme →
Leading the 12 is Château de Roquetaillade, 30 km away; they include 7 châteaux and 2 attractions.
ChâteauChâteau des Quat'Sos10 km southwest, in La RéoleChâteauChâteauChâteau du Hamel19 km west, in Castets et CastillonPlaces within 40 km of Sainte-Gemme with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Sainte-Gemme itself, but within 5 km there are Château de Guilleragues, Château de Caze and THE petite GALLERY.
One, in town or within 5 km: THE petite GALLERY.
The nearest with articles in both French and English Wikipedia: Château de Roquetaillade (30 km), Château d'Yquem (33 km), Cathédrale Saint-Jean-Baptiste de Bazas (31 km), Village des pruniers (26 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 Sainte-Gemme, 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.