It seems like everyone had castles and castle-like fortifications: Europeans, Tarascans, ...
hi! there's always room for more input, but FYI, there have been similar questions, so check these out
on Chinese castles
Why didn't Asians build castles like the Europeans?
Why did castles only appear in Europe?
on other Chinese fortifications, i.e. the Great Wall
Did the Great Wall pose any sort of challenge to Genghis Khan's invasion force?
Was China's Great Wall militarily effective, and if so, for how long?
and (just cuz these are interesting), on Japanese castles
Why are Japanese castles built of wood as opposed to stone?
What military value did Japanese castles have, compared to European castles?