The National Jeongdong Theater of Korea, Cecil, is a historic performance hall in Jung-gu, Seoul. Originally opened in 1976 as Cecil Theater, it’s a small yet iconic venue with a capacity of 232 seats. During the late 1970s, it became the heart of Korea's theater scene, hosting the Korea Theater Festival from 1977 to 1980. Despite its prominence, financial difficulties led to its closure in 2018 after being operated by private theater groups 'Madan' and 'Rodem.' In April 2018, the Seoul Metropolitan Government spearheaded a cultural regeneration project to reopen Cecil Theater and handed its management to a non-profit organization. Designed by renowned architect Kim Joong-up, the theater has long been a cornerstone of Korean performing arts and cultural heritage. In 2022, the theater was revitalized under the management of the National Jeongdong Theater, taking on the new name 'National Jeongdong Theater of Korea, Cecil.' Today, it serves as a vibrant space for artists and audiences to connect through innovative and experimental performances, upholding its legacy and creative core values.