Things To Do In Paris

[Myriad2112]

My son has finished his Uni term and is using his easter holidays to go to Paris for his first solo trip abroad. Apart from the Eiffel Tower and the Louvre has anyone got any recommendations for a student to see or do.
Thanks

[Buenchico]

The 'hop on, hop off' Batobus river service is far cheaper than the river boats that have guides on board them and it's a great way to get around many of the best sights:
http://www.batobus.com/english/

The Musée d'Orsay is well worth a visit:
http://www.musee-orsay.fr/en/home.html

The Latin Quarter is one of the best areas to eat cheaply. A really good 3-course lunch costs around €15 (but there are even cheaper options available too).

I enjoyed the Le Musée des Égouts de Paris, which is a self-guided tour of the sewers!
http://www.paris.fr/english/heritage-and-sights/main-sights/visit-the-paris-sewer-system-duplique/rub_8275_stand_132295_port_19140