Here is five hiking spots for all skill levels. It's good go out and take the culture and nature.

1. Seoul City Wall

Point: Walk through history

2. Inwangsan Mountain

Point: Panoramic view of Seoul

3. Cheonggyesan Mountain 

Point: Stair way to heaven

4. Dobongsan Mountain

Point: Beautiful stone peak

5.Gwanaksan Mountain

Point: Paths of many ups and downs

Source: Visit Korea