[Seoul cityview] 1904. Willard D. Straight/Early U.S.-Korea Diplomatic Relations, Cornell University Library. Namdaemun' (Great South Gate in Seoul) is shown here with the tramtrails, which was instituted as a public transportion system in May 1899. 'Namdaemun', one of the 4 main gates of the old city wall, was completed in 1398 and underwent major restoration in 1447 and again in 1997. It is designated as National Treasure #1, one of the most recognizable landmarks in Korea.