You can see unique expressway rest area on your way to Yangyang in Ganwondo.
It is for two-way(up/down).
Both way people can visit this rest area.
you know, South Korea expressway rest area is "Wonderland".
There are some good restaurants, snack bars, coffee shop, well-known local products market and gas station.
And also, you can go to clean and comfortable restroom.
내린천휴게소(Korean unique architecture, expressway rest area)
It is four-story building. There is a Eco Exhibition Hall about local place especially.
If you have chance to visit Gangwondo in Korea, It is recommended place to visit.