Learning a language isn't just about learning the language, it's also about the culture. A visit to Paris is a fantastic way to sample part of French culture for learners of French, but for many it will be out of the question.
So instead, bring a small part of Paris to your classes with this video. featuring a montage of photos showing the most famous parts of Paris. At 4 mins 20 seconds the video is long enough to get a first impression of Paris, but short enough to keep pupils' attention.