Question: what to do on christmas day paris?
Answer: Admire the Christmas lights. From mid-November, Paris gets decked in her Christmas finery. ... 
Go window shopping. ... 
Visit the Christmas markets. ... 
Go ice skating. ... 
Take a trip to the fair. ... 
Listen to a Christmas concert. ... 
Join in a Christmas church service. ... 
Warm up with a vin chaud.