There is not only in Paris that you will find important things to do and see!
You have tons of activities to do and masterpiece to see in Paris surroundings ;)
Not to mention Versailles Castle, Disneyland Paris, Astérix Park ....
As you will find very good urban train connections (Transiliens and RER) linking Paris to its suburbs, it will be quite easy for you to reach the place you want to go by using our public transportation network.
People, if you have the chance to live in Paris, or close to Paris, so you should explore the suburbs!
One last thing, check this article if you want to discover more about the geographical limits of Paris surroundings ;)
Have a great time by discovering Paris Surroundings & its Suburbs!
Your Erasmus of Paris Buddies!