This is one of three immense clocks found in the Musee d'Orsay, and original from the old Gare d'Orsay rail terminal
There is a magnificent gilded clock in the main central portion of the museum,and also one in the very nice 5th floor restaurant.

This clock is just at the end of the Impressionist galleries on the top floor.
In this image, one can see a portion of the Louvre, (the Richelieu and Denon wings), which is just across the River Seine.