"Oh, it was so hard to leave Paris, just about my favorite city in the world"

This quote by Tony Visconti speaks to the emotional connection he has with Paris. It is clear that he has a deep appreciation for the city, as he calls it his favorite worldwide. This recommends that he has actually spent a significant quantity of time in Paris, and has established a strong bond with the city. The fact that it was hard for him to leave implies that he had to part with something that was really dear to him. This might be the people he fulfilled, the locations he visited, or the experiences he had while in Paris. Whatever it was, it was something that he valued and was tough to part with. This quote talks to the power of connection and how it can make leaving a location so tough.