Why is London a riddle and Paris an explination?

London is often described as a riddle due to its complex history, diverse culture, and multifaceted identity, which can be puzzling and enigmatic to outsiders. In contrast, Paris is seen as an explanation because its beauty, art, and romance are more straightforward and widely celebrated, embodying a clear narrative of elegance and sophistication. Together, they represent two distinct approaches to urban identity: one shrouded in mystery and the other radiating clarity and charm.