For your first day in Paris, take a classic walking tour with an English-speaking guide to take you to all the main sightseeing spots. It only costs about 20 euros per person for 3.5 hours but you get to see all of Paris on the first day and allows you to go back and re-visit any of the sights for the rest of your holiday or go elsewhere. Wear comfortable shoes as there is a lot of walking and bring your camera!
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