Les Istres-et-Bury

Flavigny (French pronunciation: [flaviɲi]) is a commune in the Marne department in north-eastern France.

Plivot (French pronunciation: [plivo]) is a commune in the Marne department in northeastern France. From 1 December 1939 until 15 February 1940 No. 139 Squadron RAF was deployed to a local airfield nearby with Bristol Blenheim IV's as of the Second World War's RAF Advanced Air Striking Force.

Athis (French pronunciation: [atis]) is a commune in the Marne department in northeastern France.

Oiry (French pronunciation: [waʁi]) is a commune in the Marne department in north-eastern France.

Bisseuil (French pronunciation: [bisœj]) is a former commune of the Marne department in northeastern France. Since January 2016, Bisseuil is part of the administrative commune Aÿ-Champagne.

Tours-sur-Marne (French pronunciation: [tuʁ syʁ maʁn], literally Tours on Marne) is a commune in the Marne department in north-eastern France.

The Château de Mareuil is a château in Mareuil-sur-Ay, Marne, France.

Avize (French pronunciation: [aviz]) is a commune in the Marne department in northeastern France.

Billecart-Salmon is a medium-sized champagne house in Mareuil-sur-Aÿ, France. Founded in 1818 with the marriage of Nicolas François Billecart and Elisabeth Salmon, it is one of the few to remain family owned. The Cuvée Nicolas-Francois Billecart 1959 won first place in the Champagne of the Millennium 1999, out of 150 of the finest 20th century Champagnes. A magnum of the winning champagne later sold for £3,300. Billecart-Salmon was ranked tenth among major Champagne houses by Antoine Gerbelle writing for La Revue du vin de France. La Revue du vin de France's Guide Vert awards Billecart-Salmon two stars out of three. Billecart-Salmon Brut Reserve are aged in the cellars for 36 months before release. Billecart-Salmon champagnes have been reviewed favourably by wine writer Jancis Robinson. The current President is, since 2019, Martin Solibakke-Billecart who represents the family’s seventh generation.."

Mareuil-sur-Ay (French pronunciation: [maʁœj syʁ aj], literally Mareuil on Ay) is a former commune in the Marne department in north-eastern France. Since January 2016, Mareuil-sur-Aÿ is part of the administrative commune Aÿ-Champagne. Its population was 1,113 in 2019. The patron saint is Saint Trésain.

Chouilly (French pronunciation: [ʃuji]) is a commune in the Marne department in north-eastern France.

Jacques Selosse is a Champagne producer and grower based in the Avize region of Champagne. The house has been rated as one of Champagne’s top five producers by Andrew Jefford in The New France.