1) Parc de la Villette free open air cinema
19th arrondissement, villette.com/fr
2) Musée Carnavalet
This excellent Paris history museum is always free, and a bonus is that it’s housed in old Parisian mansions.
3) Versailles Gardens – the gardens are free of charge
4 Cathédrale Notre Dame de Paris
The Cathedral Notre Dame de Paris is a Catholic Church.
Admission is free, however no baggage is allowed.
5 Jardin Luxembourg located near the Saint-Germain-Des-Pres area in the 6th arrondissement.
6 Have a late night picnic at the Square du Vert-Galant
Pont Neuf, Saint-Germain-l’Auxerrois, 1st arr
7) the Sacre Coeur
Admiring the view across Paris from outside the church’s great doors
8) View the Eiffel Tower from the Trocadéro ( you can also take a professional photographer with you http://www.myparisianphotographer.com)
9) the Arc de Triomphe this towering monument as one of the best free things to do in Paris.