There are about 20,000 travel agencies nationwide. There are countless travel agencies that are small to medium sized but offer better quality services than larger ones.
I collected them in a good tour shop.
Browse over 1 million overseas packages / hotels / local tours by price and popularity by 70 countries worldwide
It is a platform site that collects and sells travel-related products.
In addition to Seoul, there are many travel agencies, including Daejeon Daegu Busan. You can make a reservation while looking face to face.