-Around 250 A.D.: Lutetia is christianized. The first churches are built.
- 4th-9th centuries: Frankish and Norman invasions.
Clovis I pronounces the kingdom of Gaul and renames Lutetia Paris.
-1163: Construction of the Notre Dame Cathedral begins.
It would take almost two centuries to complete the masterpiece of early gothic architecture.
- 12th and 13th century: Other important monuments and sites are built, including the Sorbonne and the Sainte-Chapelle cathedral.
The swamp (Marais) on the right bank of the Seine is drained and the city expands north of the Seine. Around 1200, construction of a fortress that
