Grand Est shares border with Luxembourg
Grand Est (French: [ɡʁɑ̃t‿ɛst] (listen); Alsatian: Grossa Oschta; Moselle Franconian/Luxembourgish: Grouss Osten;
Rhine Franconian: Groß Oschte; German: Großer Osten [ˈɡʁoːsɐ ˈʔɔstn̩]; English: "Great East") is an administrative region in Northeastern France. It superseded three former administrative regions, Alsace, Champagne-Ardenne and Lorraine, on 1 January 2016 under the provisional name of Alsace-Champagne-Ardenne-Lorraine (pronounced [alzas ʃɑ̃paɲ aʁdɛn lɔʁɛn]; ACAL or, less commonly, ALCA), as a result of territorial reform which had been passed by the French Parliament in 2014.The region sits astride three water basins (Seine, Meuse and Rhine), spanning an area of 57,433 km2 (22,175 sq mi), the fifth largest in France; it includes two mountain ranges (Vosges and Ardennes). It shares borders with Belgium, Luxembourg, Germany and Switzerland. As of 2020, it had a population of 5,562,651 inhabitants. The prefecture and largest city is Strasbourg.
The East of France has a rich and diverse culture, being situated at a crossroads between the Latin and Germanic worlds. This history is reflected in the variety of languages spoken there (Alsatian, Champenois, and Lorraine Franconian). Most of today's Grand Est region was considered "Eastern" as early as the 8th century, when it constituted the southern part of the Francian territory of Austrasia. The city of Reims (in Champagne), where Frankish king Clovis I had been baptized in 496 AD, would later play a prominent ceremonial role in French monarchical history as the traditional site of the coronation of the kings of France. The Champagne fairs played a significant role in the economy of medieval Europe as well. Alsace and Lorraine thrived in the sphere of influence of the Holy Roman Empire for most of the Middle Ages and Renaissance, and subject to competing claims by France and Germany over the centuries. 
The region has distinctive traditions such as the celebration of Saint Nicholas Day, Christmas markets, or traditions involving the Easter hare in Alsace and Lorraine. Alsace-Moselle are furthermore subject to local law for historical reasons. With a long industrial history and strong agriculture and tourism (arts, gastronomy, sightseeing), the East of France is one of the top economic producing regions in the country.Grand Est français, a term used to refer to the northeast quarter of Metropolitan France, although this term refers to a geographic region larger than just ACAL. The term has been commonly used and topped the polls mentioned above.
Grand Est Europe (Great East Europe), a variant of Grand Est that alludes to the region being a gateway to Europe both through trade and since Strasbourg is home to several European institutions (which makes it one of the three unofficial capitals of the European Union). However, the name was mocked for how it could suggest that the region is in Eastern Europe.
Austrasie (Austrasia), which refers to an historical region spanning parts of present-day northeast France, the Benelux, and northwest Germany.
Quatre frontières (Four Frontiers), which refers to the region's border with four countries.Geography
Grand Est covers 57,433 square kilometres (22,175 sq mi) of land and is the sixth-largest of the regions of France. Grand Est borders four countries—Belgium (Wallonia region) and Luxembourg (Cantons of Esch-sur-Alzette and Remich) on the north, Germany on the east and northeast, and Switzerland on the southeast. It is the only French region to border more than two countries, or more countries than French regions. Its neighbors within France are Bourgogne-Franche-Comté on the south, Île-de-France on the west, and Hauts-de-France on the northwest.
adjoins borders neighbors is adjacent to