Qingwatai, it is said that there are 150,000 green tiles, each of which has a life span of more than 100 years. It is the presidential palace of Korea. If you want to go in and see it, you must make an appointment online in advance. If you follow the tour group, nine out of ten will take you to the door to take photos, and then take you to visit the Jingfu Palace. I was here with the tour group, just a group of friends stopped to take photos of the fountain in front of the door. Now I think they all have a little regret. It's very close to Jingfu Palace. If you travel with a group in Seoul, you will definitely come here. You're not afraid to find it. There's no money here, but it's not easy to get in. You need to make an appointment in advance. Here is the reservation website: http://english.president.go.kr/. It takes at least an hour and a half to get there. If you don't go in, just take a picture at the door, half an hour is enough. There is Jingfu Palace on the subway. Jingfu Palace is very close to here and you can walk there.