Small Paris Secret: There ARE many free activities! Example #34? The Louvre! Free on the first Sunday of every month! 60secondparis.com discovers & shares unknown authentic Paris: watch the site for real insider intel (not hot boutiques/restos, or 100€ dessert fads). Real Paris for real Travelers! ..that Parisians also adore.
Louvre’s English site http://www.louvre.fr/en Happy to answer questions! Come, fall in love with Paris!