Undercover restorers fix Paris landmark's clock

Pantheon, user's guide [2009]:

https://vimeo.com/51365068

    Original title: "Panthéon, mode d'emploi"

    Executive producer: RUHE PRODUCTION © 2009

    Produced by:
    UX films
    Zone-Tour

    In association with:
    La Mexicaine De Perforation
    The Untergunther
    The Mouse House

// previously on HN, Feb 2015: https://news.ycombinator.com/item?id=9052160

// Wired, Jan 2012: http://www.wired.com/2012/01/ff_ux/all/1