Seoul is such a huge place with tons of different areas that each could be a city by itself. Edit: I just checked the (sadly paywalled) beginning of the artic

Seoul is such a huge place with tons of different areas that each could be a city by itself. Edit: I just checked the (sadly paywalled) beginning of the article and the author also says: > [...] alley of small apartments and trucks selling garlic, the next you’re in a modern business park so sterile it feels like a doctor’s office.