One-day plan
Morning
Start around Cheonggyecheon and HiKR Ground for official visitor context, exhibitions, and K-culture orientation.
Lunch
Move to Hongdae for music streets, shops, cafes, and a casual meal.
Afternoon
Go to Seongsu for pop-ups, design, cafes, and photo-friendly streets.
Evening
Finish in Myeongdong for beauty, personal color, album shopping, snacks, and a simple return to most hotels.