Dongjeommun is the main gateway to Naju and the eastern gate of the Najueupseong Fortress.

The Najucheon Stream flows inside the Najueupseong Fortress, and the eastern gate is situated near the downstream area where the stream, flowing from west to east, meets the Yeongsangang River. When you climb up to the second story of Dongjeommun, you will be met with a full view of the Yeongsangang River and Najudaegyo Bridge. There is a fascinating story associated with the name, “Dongjeommun.” The name comes from “Dongjeomuhae” in Seogyeong (Shangshu; The Book of Documents written by Confucius), and it means that the Najucheon Stream flows toward the east into the Yeonsanggang River before reaching the sea. In the late Goryeo Dynasty, Sambong Jeong Do-jeon was banished to Naju after advocating the need to build friendly relations with the Ming Dynasty, while keeping the Yuan Dynasty at arm’s length. He climbed up to the eastern gate of Najueupseong and recited “The Letter to the Residents of Naju (Deungnajudongnuyuburoseo). Dool Kim Yong-ok noted these historical events when writing the signboard for Dongjeommun after it was restored in 2006.