Abbaye Royale de Saint-Jean-Baptiste du Moncel
Abbey located in Oise, in France.
Each edition grades its towns against each other only.

From Saint-Martin-Longueau, the big name within reach is Château de Chantilly, 18 km away. Look within 5 km of its centre for the 2 places to visit; none is in Saint-Martin-Longueau. There are a monastery and a château to choose from.
Second to Abbaye Royale de Saint-Jean-Baptiste du Moncel is a château.
Monastery or conventAbbaye Royale de Saint-Jean-Baptiste du Moncel4.4 km south, in PontpointChâteauChâteauChâteau de Villette1.6 km southeast, in Pont-Sainte-MaxenceBest 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.
Out at 4.4 km is Abbaye Royale de Saint-Jean-Baptiste du Moncel, the farthest.
The first 20 on the list, numbered as below. The shape is the commune of Saint-Martin-Longueau; the orange dot is its centre. © OpenStreetMap contributors · commune boundary: IGN
Both are châteaux or heritage sites.
Dark: in Saint-Martin-Longueau. Light: in the communes within 5 km of its centre.
Both on the list lie within 5 km of its centre.
Abbey located in Oise, in France.
Nothing is mapped in Saint-Martin-Longueau itself; these are within 5 km of its centre.
The history of Saint-Martin-Longueau → · Parks and trails in Saint-Martin-Longueau →
Start with Château de Chantilly, 18 km off, the best known of 12.
AttractionChâteau de Chantilly18 km southwest, in Chantilly
MuseumMusée Condé18 km southwest, in ChantillyTheme parkTheme parkParc Astérix23 km south, in Plailly
AttractionCathédrale Saint-Pierre de Beauvais39 km west, in BeauvaisChâteauChâteauChâteau de Pierrefonds27 km east, in Pierrefonds
CathedralCathédrale Notre-Dame de Senlis15 km south, in Senlis
ChâteauChâteau de Compiègne19 km northeast, in Compiègne
MuseumCamp de Royallieu16 km northeast, in CompiègneAttractionAttractionCathédrale Notre-Dame de Noyon39 km northeast, in Noyon
AbbeyAbbaye de Royaumont27 km southwest, in Asnières-sur-OiseMonastery or conventMonastery or conventAbbaye royale de Notre-Dame et Toussaints de Chaalis22 km south, in Fontaine-Chaalis
ChâteauChâteau d'Écouen40 km southwest, in ÉcouenPlaces within 40 km of Saint-Martin-Longueau with an article in both French and English Wikipedia, nearest first.
Nothing is mapped in Saint-Martin-Longueau itself, but within 5 km there are Abbaye Royale de Saint-Jean-Baptiste du Moncel and Château de Villette.
No museum or gallery is mapped in Saint-Martin-Longueau or within 5 km.
The nearest with articles in both French and English Wikipedia: Château de Chantilly (18 km), Musée Condé (18 km), Parc Astérix (23 km), Cathédrale Saint-Pierre de Beauvais (39 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-Martin-Longueau, 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.