The biggest city I've been to is Tokyo, Yokohama also counts as another large city I suppose even though it's super close. Osaka is quite populous as well. The only other big city I've been to is Seoul, though it didn't feel that big.
Hong Kong is the largest city I've been in over all. Other than that I have a pretty small sample size since it was the only time I've been out of Australia. Sydney and Melbourne are both pretty large though and I've been to both of them.
I was there for about 4 days in 2000, grandma was visiting relatives, did enjoy Mexico City for sure, culture, food, the atmosphere, traffic was terrible in some parts that I went to. Its so much different than where I live now (in Seattle), I would love to return again some day
I ♥ Fire Foxes and Cats!! - art i drew myself
instead of 'Catch 'em All' for me would be "gotta Pet 'Em All"
check out my arts: Firox-Fox - Discord: Jyo-Espeon#0363