The Notre-Dame-en-Vaux is a Roman Catholic church located in Châlons-en-Champagne.

The cathedral is a major masterpiece in Marne.

Started around 1157, ended in 1217.

The church was classified a historic monument in 1840.

In 1998 it was registered on the World Heritage List by UNESCO under the title of "roads to St Jacques de Compostela in France".