You can pretty much park anywhere as long as you leave your phone number on the dash of your car so if you block someone in they can call you to come move your car. You can park on sidewalks, you can double and triple park. We have even parked on the side of the highway near Jamsil stadium because there were no parking spots left. You can block people in with no worries at all. If you don't want to be bothered with a phone call you can even leave your keys in your car and or put your car in neutral so others can move your car for you.
This place is crazy.
My van is the red one...most cars in Korea are black, white or gray so it is always easy to find my car.
The white car in front of my car is not in a parking spot and as you will notice my minivan is too big for most parking spots here.