FREE things to do in Seoul🇰🇷 Chill with a book (they have English books) beside Cheonggyecheon Stream at the Seoul Outdoor Library, then catch the stunning Cheonggye Soul Ocean projections near Gwanggyo Bridge after dark🌈 📚 Outdoor Library: Fri–Sun, until 1 Nov 2026 🌊 Soul Ocean: until 31 Dec 2026 💸 Both FREE 📍 Cheonggyecheon Stream, Seoul ➡️ Save these free things to do in Seoul for your next South Korea trip #visitseoul #seoultravel #visitkorea #freethingstodo #koreatravel