Wondering what to do in Paris this week?

You can ride 20 carousels for free (gratuit) between December 17th and January 1, 2012
between the hours of 10am and 7pm. 
Here is the link to the list with the arrondissement and location of each.

The beautiful double-decker Carrousel Venitien is not one of them
but it has a wonderful view of Sacré Coeur.

(another counter-clockwise rotation)

Carrousel Venitien du XVIIIème Siècle
Place Saint-Pierre
75018 Paris