Reading Enola Holmes for school and the character in the prologue was like "im lost in the biggest city in the world and alone" :( so i was like, no fucking WAY London is the biggest city in the world, so i googled it and the results couldn't decide between Tokyo and Chongqing so i assume they're moreso equally big. And then it ocurred to me that maybe London could have been the biggest city of the world and then i googled it and. Yes. Turns out London was the biggest city of the world in the XIX century.