パリ取材と秘密の通路ツアー

I want to apologise for writing this so late. However, this just proves how valuable your tour was to me. Yves was the best guide I have ever come across, so knowledgeable, polite, and with a great talent to put his knowledge across to his listeners. I would never have found these passages without him. They are so well hidden that one can only find them with a guide. The history of Paris shown in these passages is just fascinating. I could have spent the whole day walking around them, and there are only a fraction of them left now. I hope they remain well-preserved for posterity. Thank you so much for helping me discover them.