Chemin de fer touristique du Rhin
Heritage railway in Frankreich.
Each edition grades its towns against each other only.

Nothing on our list is in Obersaasheim; the 6 places to visit are within 5 km of its centre. Among them are 3 museums, 2 forts and a château. Go 18 km out for Musée Unterlinden.
The list goes on from Chemin de fer touristique du Rhin to 2 museums, 2 forts and a château.
MuseumChemin de fer touristique du Rhin3.3 km north, in VolgelsheimMuseumMuseumMusée Vauban3.7 km northwest, in Neuf-BrisachFortFortEnceinte de Neuf-Brisach3.8 km northwest, in Neuf-BrisachFortFortPorte du Fort Mortier4.5 km north, in VolgelsheimMuseumMuseumMAUSA Vauban3.7 km northwest, in Neuf-BrisachChâteauChâteauOuvrage de Heiteren2.2 km northwest, in AlgolsheimBest 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.
To the northwest is where most of the 6 lie.
The first 20 on the list, numbered as below. The shape is the commune of Obersaasheim; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Museums or galleries are the biggest group (3), then châteaux or heritage sites (3).
Dark: in Obersaasheim. Light: in the communes within 5 km of its centre.
6 places, all within 5 km of its centre, make the list.
Nothing is mapped in Obersaasheim itself; these are within 5 km of its centre.
The history of Obersaasheim → · Parks and trails in Obersaasheim →
Musée Unterlinden, at 18 km, heads the 12.
MuseumMusée Unterlinden18 km northwest, in ColmarAttractionAttractionChâteau du Haut-Koenigsbourg33 km northwest, in Orschwiller
MuseumCité du train33 km southwest, in MulhouseFortFortVicus gallo-romain de l'Oedenbourg7.9 km north, in Biesheim
MuseumMusée Bartholdi18 km northwest, in Colmar
MuseumMusée national de l'Automobile31 km southwest, in Mulhouse
MuseumMusée des Beaux-Arts de Mulhouse32 km southwest, in Mulhouse
AttractionChâteau de Saint-Ulrich30 km northwest, in RibeauvilléAttractionAttractionJohann Baptist Wendling29 km northwest, in RibeauvilléChâteauChâteauChâteau de Dagsbourg22 km west, in EguisheimAbbeyAbbeyAbbaye Notre-Dame d'Oelenberg37 km southwest, in ReiningueChâteauChâteauChâteau de Bilstein31 km northwest, in RiquewihrPlaces within 40 km of Obersaasheim with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Obersaasheim itself, but within 5 km there are Chemin de fer touristique du Rhin, Musée Vauban, Enceinte de Neuf-Brisach and Porte du Fort Mortier.
3 museums and galleries in town or within 5 km, including Chemin de fer touristique du Rhin, Musée Vauban and MAUSA Vauban.
The nearest with articles in both French and English Wikipedia: Musée Unterlinden (18 km), Château du Haut-Koenigsbourg (33 km), Cité du train (33 km), Vicus gallo-romain de l'Oedenbourg (7.9 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 Obersaasheim, 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.