Exploring the different arrondisements of Paris

What's great about Paris is that there's a little something different in all of the arrondisements (divisions) of Paris.  I can never get bored of photographing these areas since all have their own charm, history, and uniqueness.  Some of the places I wandered around are Montparnasse, Le Marais, Opera, etc.

 This was taken atop the Tour Montparnasse (689 ft tall office skyscraper)