This video is a collection of high quality photos by American Luke Shepard. It started out as a project for his studies at the American University of Paris.
The photos were taken after 1.00am to try and capture Paris in a different light free of tourists. Luke didn't use timelapse photography to film the sequence as he moved around the monuments. He would focus on a particular point for the entire sequence keeping that spot in the same place the entire time. He then manually timed the photos. I am sure that you will agree that the results are stunning. I find the whole effect mesmerizing.
For background information on this impressive project see Anne Ditmeyer's interview of Luke: Behind the Scenes of Luke Shepard's Le Flâneur.