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Photo: Republic of Korea, CC BY-SA 4.0 via Wikimedia Commons
This state-of-the-art complex combines a massive underground mall, luxury hotels, office towers, convention center, and international trade center. Parts of the mall have aged considerably since its debut, but it still features mid-to-upscale shopping, entertainment, and Korean and Western food options. Popular attractions here include Starfield Library with its towering bookshelves in central atrium, and K-POP Square outside the southeast corner of the mall (a huge digital billboard shows 3d animations every 30 minutes; these can be quite impressive and draw a crowd of spectators). Yearly conventions at the COEX include online gaming conventions (such as the popular Korean-originated MMORPG Lineage), anime conventions, and auto shows. It is possible to spend the entire day in this covered mall without setting foot outside, which can be a blessing if very bad weather hits outside.
Starfield COEX Mall is an underground shopping mall in Samseong-dong, Gangnam-gu Seoul, South Korea. The name "COEX" is derived from "COnvention centers" and "EXhibition halls".
© OpenStreetMap contributors
세븐럭 카지노
Seven Luck Casino Gangnam COEX in the center of Gangnam, Seoul
It is a Korean-style casino with oriental atmosphere and state-of-the-art facilities.
It boasts a total of three floors (area 6,094㎡) and operates 78 table games (baccarat, blackjack, poker, roulette, etc.), 108 latest machine games, and 45 electronic tables
코엑스 아쿠아리움
There are various kinds of living things and indoor aquariums that are good to come with family or lovers
봉은사, 奉恩寺
A Buddhist temple with a long history that was once located on the rural outskirts of Seoul. The surrounding area was transformed during the rapid development of Gangnam from the 1980s, and the temple is now surrounded by high-rise buildings and commercial districts. The grounds contain several Buddhist buildings and sculptures.
서리풀 공원
선정릉
Tranquil park in the middle of Gangnam with the burial mounds of two kings and a queen from the Joseon dynasty.
(코믹월드, Comic World)
Roughly every other month, the SETEC convention center hosts Seoul's World Comic con Festival. Admission is ₩4,000 but the inside is rather bland unless you are extremely familiar with Japanese and Korean anime. Your best bet is to go during convention hours and mingle with the crowds of Korean teenagers in elaborate cosplay costumes dressed as their favorite anime characters. Most are excited to see foreigners and very glad to have their pictures taken. As mentioned, this convention only takes place once every two months, so check the website (Korean only) to make sure it will be in session while you are in Seoul.