Two rooms present the life and work of winegrowers and cellarmen. Collections of bottles and labels. On the upper floor is a large archeological collection, with a wealth of funeral material taken from the region's cemeteries.

The church was built inside some houses in the 12 C in a mixture of styles, late Gothic and Renaissance. Some Renaissance stained-glass windows, magnificent grisaille compositions, light up chapels on the lower right side.

The current building, begun around 1235, belongs to the spear-shaped Gothic-style created at Chartres 40 years earlier. The north facade is in pure Gothic style. The interior, more than 100 metres long, is impressive. The nave, 27 metres high, flooded with light, has a sensation of lightness. The cathedral has preserved an attractive collection of stained-glass windows.

Somewhat eclectic, the collections do contain some attractive pieces: the recumbent figure of Blanche of Navarre (1252), the retable of the Passion sculpted in polychrome wood around 1500, a head of John the Baptist by Rodin. An archaeology room dedicated to regional excavations, paintings coming from the 14 to the 20 C, and an Ornithology room with 3,000 European birds and an attractive reconstruction of the interior of a typical traditional Champagne dwelling.