Most people in Korea live in apartment buildings and this is mostly because there’s simply little land for everyone to go around, especially in metropolitan cities like Seoul, which is the second largest city in the world after Mexico City.
Koreans love doing things fast. What do I mean by that?
If you goto a restaurant, waitress will seat you, they will come back within 5 seconds to take your order, you order your food, and food will be on your table in the next 30 seconds or less. This is a typical lunch process in Korea, everything is done fast.
Now, if you go into a Korean elevator, the elevator door opens and closes, like 10 times faster than any elevator you’ve been in the States. Also, Korean elevators allow you to “cancel”, meaning you can press floor 20 then press it again to cancel. This way you can undo your mistakes or perhaps you forgot to bring something and must go back to your floor.
Also, you can notice in the above photo there’s a TV on the elevator. Most Korean elevators have this which is nice I guess. And you will notice a bunch of ads for restaurants, real estate, etc…etc…