I have been asked by many, what if they only have a week to spend in Korea, where should they go or what should they do?
Assuming that the whole 7 days you are in Korea and excluding the flight arrival/departure.
This suggestion is not necessary to be done in the order below. It is all up to you and the weather. ^^
1.Myeongdong - Namsan tower - Namdaemun
This three places are in the same location. You can do within one day. From Myeongdong subway station, you could walk around 15 minutes up the hill to Namsan tower cable station. Myeongdong is a great place to shop for younger generation and I like the energy there. If you want to watch Nanta show you could opt for Myeongdong theather. Namdaemun is just across the road after you complete the whole stretch of Myeongdong street and a few shopping complex are around the are - Shinsegae, Lotte and Avenue. I love eating at the basement food court in Lotte but most of the time it's crowded.
2. Insadong - Jongno - Cheongyecheon - Gyeongbok/Chandeok palace - Dongdaemun
If you walk along the Cheongyecheon stream, you could choose the exits to Jongno, Insadong or Dongdaemun. They are just very closed to each other. If you love antiques and arts galleries take the opportunity to savour the beauty of Insadong. There are so many korean traditional restaurant to choose around this area. At the end of the Insadong street you could visit the infamous Gyeongbok/Chandeok palace. Gyeongbok is the masculine type of palace while Chandeok is the feminine counterpart. I love both palace. Try to visit both if you have the time. Dongdaemun is better visited at night because the place is heated up in between 10PM to 5AM.
The place is a bit further out from Seoul. You may need to take 1 hour and a half train from Cheongyanni Station and stopped at Gapyeong Station. From there, take a taxi to the jetty and a ferry to the island. If you love the Winter Sonata hit drama by Bae Yong Jun and Choi Ji Woo, don't miss this spot. I prefer
this place in autumn and winter.
4. Yeoido/Yeoinaru - Hangang River - 63 Building - Aquaria
If you want to visit the broadcasting stations like KBS and MBC, you should go to Yeoido/Yeoinaru and then visit the 63 building where they have an aquarium attached. Complete your day with Hangang River cruise at night. This place is pretty in spring.
5. Lotte World/Everland
Choose one of the theme parks. Lotte world is just in Seoul near Jamsil but you need to take a 1 hour bus to Everland. The entry price is about the same but Everland is much bigger. Avoid school holidays or public holidays because the queue for the games will be never ending story. One whole day is needed for theme park.
6. DMZ - Demilitarized Zone
Stretched further out from Seoul. This is a place worth visiting cause it is a place like no other in South Korea. DMZ is the border between South Korea and North Korea
7. Apgujeong for K-pop lovers / National Museum for historical lovers/ Shopping
You might meet your K-pop idols in Apgujeong but this is not a guarantee. Try walking into any of the post salons there and you might bumped into them. Final day should be left for free tour. You could choose the suggested one or just do some shopping before you leave Korea.
There are so many places to visit in Korea which are left out:
Hongik/Hongdae or Ewha/Sinchon - students flock this area because a few universities
Gwanghamun - King Sejong and General Lee Sun Shin statue and their memorial
Gyeongju - If you have another 2-3 days extra, a MUST visit historical site.
Jeju island - If you have another 2-3 days extra, the infamous island with an inactive volcano mount Halla.