−3°C Outside, 25°C Inside! You Can Build a Whole Seoul Winter Day Indoors—The National Museum Is Free and Open Until 9 pm on Wednesdays and Saturdays, the Aquarium Is 35,000 Won, the Observation Deck 33,000, the Jjimjilbang 14,000, and Here Is How to Chain Them on a Cold-Wave Day
A blueprint for surviving Seoul’s December (0.2°C average) indoors. The National Museum of Korea is free and open until 9 pm on Wednesdays and Saturdays, Starfield Library is free until 10 pm, the COEX aquarium lists at 35,000 won (up to 20% off online), Seoul Sky is 33,000, Lotte World 67,000, and a jjimjilbang 14,000 by day. Prices, hours and a route, packed into one day.