- Book this all-in-one pass that provides travelers an opportunity to shop, eat, and immerse themselves in Korean culture - Enjoy up to 40% off at food and shopping malls and access COEX Aquarium, SMTOWN Museum, MegaBox, and more! - Enjoy hassle-free travel with the One Pass and see most of what Seoul has to offer - With the Gangnam COEX All In One Pass, sightseeing in Seoul will be more fun and convenient!