Charles de Gaulle International Airport

I dont know what drugs were being used at the time by the architect that imagined that soviet-style concrete monstrosity. Not only is it ugly, but the baggage claim is an embarrassment with people walking on one another. When you think it's the first impression that so many holidaymakers are getting of France...

Other than for the bits that collapse on people underneath, T2 is somewhat more practical.

Well I am from the south of France, and we don't like Paris there, so maybe I have a bias.

The RER (the commuter light rail system) runs directly into Paris, and you can use the same ticket to transfer to the Paris Metro or another RER line. It's very inexpensive (about 8.10 euros, I think).