historic buildings in chanpagne france?

Answer 1

The Gothic cathedral in Reims is one of the most famous buildings, and one of the most famous cathedrals in the world. See pictures and information at http://en.wikipedia.org/wiki/Notre-Dame_de_Reims
Castles are not quite as famous, but there are some, such as La Motte-Tilly Château, château de Montmart, château de Sedan