New York had 47.8 million visitors last year, and Paris had 30 million. But I would never compare the two cities in terms of sustainability, because Paris is much more dirtier and smellier than New York, hence New York is a way greener.

Now, the truth is Paris has more tourist attractions than New York – the Eiffel Tower, Arc de Triomphe, Notre Dame, Sacre Coeur, the Pantheon, Les Invalides, Versailles, just to name a few.