The Seoul International Fireworks Festival is a free event that takes place every October. The festival features a spectacular display of pyrotechnics that light up the night sky. The fireworks are launched from the Han River, and they are synchronized with music and other special effects. The festival also includes food stalls, live performances, and other activities. The Seoul International Fireworks Festival is a great choice for budget-conscious travellers who want to experience the excitement and beauty of Seoul at night.