Avenay-Val-d'Or

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

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

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.

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.."

Fontaine-sur-Ay (French pronunciation: [fɔ̃tɛn syʁ aj], literally Fontaine on Ay; also Fontaine-sur-Aÿ) is a commune in the Marne department in north-eastern France.This village lies in the Champagne region, known for its sparkling wines. Fontaine-sur-Ay spans an area of 7.72 km², with altitudes ranging between 87 and 271 meters above sea level. Its postal code is 51160. Two rivers, the Germaine and the Livre, flow through the area, meeting near the village center.

Bollinger (French pronunciation: [bɔlɛ̃ʒe]) is a French Champagne house, a producer of luxury sparkling wines from the Champagne region. They produce several labels of Champagne under the Bollinger name, including the vintage Vieilles Vignes Françaises, Grande Année and R.D. as well as the non-vintage Special Cuvée. Founded in 1829 in Aÿ by Hennequin de Villermont, Paul Renaudin and Jacques Bollinger, the house continues to be run by members of the Bollinger family. In Britain, Bollinger Champagnes are affectionately known as "Bolly".

Aÿ (French pronunciation: [aj] eye; also Ay) is a former commune in the Marne department in northeastern France. On 1 January 2016 it was merged into the new commune Aÿ-Champagne.

Aÿ-Champagne (French pronunciation: [aj ʃɑ̃paɲ]) is a commune in the Marne department, northern France. The municipality was established on 1 January 2016 and consists of the former communes of Aÿ, Mareuil-sur-Ay, and Bisseuil. They keep their names and town halls.

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

Deutz, formerly known as Deutz & Geldermann, is a Champagne producer based in the Aÿ region of Champagne. The house was founded in 1838 by William Deutz and Pierre-Hubert Geldermann and has since been run by successive generations of the Deutz and Geldermann families.

Germaine (French pronunciation: [ʒɛʁmɛn]) 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.