Due to increasing appearance of schools and universities in dramas and series, although not suggested by some as this invades privacy of the students, I was able to visit few of these schools in South Korea. Let me share with you those you may want to also see in your next trip.
Yonsei University is a private research university located in Seoul. (Wiki)
Yonsei University is a private research university located in Seoul. (Wiki)
Address: 50 Yonsei-ro, Seodaemun-gu, Seoul, South Korea
Motto: The truth will set you free. (John 8:32)