Here are some pictures of Hôtel de Ville during the colder months. I especially loved going there around January/February because they set up an ice rink! At night time, the ice rink is still open and the lights on the roof sparkle all night. Its like magic and will easily take your breath away.
Hôtel de Ville in the afternoon
Hôtel de Ville at night
Video of Hôtel de Ville Sparkling