Reference: korean.visitkorea.or.kr/detail/ms_detail.do?cotid=654b8580-70d3-4cbf-96ba-1b527fae9150&big_category=A01&mid_category=A0101&big_area=1
Best places to see Seoul by day and night
Korea's first passenger cable car. It travels 600 m from the platform to the top of Namsan Mountain, and you can reach the summit in about three minutes. During the day, you'll be rewarded with breathtaking views of the city and the lush greenery of Namsan Mountain, while at night, you'll be treated to a colorful nighttime view of the city. With N Seoul Tower at the top, there is plenty to do, and it has been used as a filming location for dramas such as "Boys Over Flowers" and "High Kick Through the Roof," making it a popular landmark for many travelers.