Terminal 3 allows you to access the activity area named Roissypole which hosts the various transport infrastructures (bus station, RER B station) as well as the Roissypôle Est and Roissypôle Ouest hotel areas.
In addition, you can find the Maison de l'Environnement nearby.
Consult the detailed plan of Terminal 3 at Paris-CDG airport.
For more information on this terminal, do not hesitate to visit the website of Paris Airport.