Start your trip at the Gyeongbokgung Palace, the most iconic site in Seoul. Explore the beautiful palace grounds and the Changing of the Royal Guard ceremony in the morning. Then, head to Bukchon Hanok Village, a traditional Korean village with over 900 traditional houses. You'll get to experience the charm of Korea's past while being in a city. Take a taxi to Myeongdong, Seoul's shopping heaven, and enjoy shopping and street food. End the day at the Namsan Tower Observatory, where you can witness a beautiful sunset view of Seoul city.
Start your day by visiting Bongeunsa Temple, a famous Buddhist temple in the city. It offers a peaceful atmosphere, and you can experience a temple stay program as well. Then, visit the National Museum of Korea, which has an excellent collection of historical artifacts and Korean fine arts. Next, explore the Seoul Museum of History, which features different aspects of Seoul's history, including urbanization and the Korean War. End the day with a show at Nanta Theater, which is a non-verbal Korean performance that combines comedy, acrobatics, and percussion.
On your last day, start in the trendy neighborhood of Gangnam. Visit the K-Star Road, where you can find street art and sculptures of famous pop stars. Next, head to the Coex Mall for some shopping. This large mall has many shops, restaurants, a movie theater, and a library. Visit the Garosu-gil street, which is a famous street for cafes, restaurants, and fashion boutiques. Finally, end your trip with a night out in the Itaewon neighborhood, which has a wide range of foreign cuisines and bars.
If you have an extra day, visit the Han River Park, where you can enjoy a picnic or rent a bike for a scenic view of the city. You can also visit the Seoul Forest, which is a large park in the middle of the city that has a butterfly garden, deer park, and several playgrounds.
If you have less time, you can pick and choose from the itinerary or combine some of the destinations.
Remember to wear comfortable shoes and clothing, especially while visiting the historical and cultural sites.
Also, it's recommended to buy a T-Money card, which is a rechargeable transportation card that can be used for buses, subways, and some taxis.