XO, Kitty, the spin-off of the To All the Boys films, is set at a fictional Seoul school but filmed at real places: Incheon International Airport, Kaywon University of Art and Design, the Dongdaemun Design Plaza and Hwaseong Fortress's Seojangdae.
The route follows Kitty's first season from landing at the airport to the end-of-term talent show, taking in a hotel exterior at State Tower Namsan, Nodeul Island on the Han River and the Independence Hall of Korea in Cheonan. The school itself is fictional, and its interiors were shot at other sites around Seoul.
Itaewon Class is set in Seoul's Itaewon, where ex-convict Park Sae-ro-yi opens the DanBam bar, and its real filming spots include SEOUL BAM, the Noksapyeong Overpass and Namsan Park.
The route follows six places where scenes of the 2020 series were shot, from the guesthouse where the leads first meet to the graffiti wall where they take pictures at the end. Some pins mark only a street, as noted at each stop.
Seong Gi-hun is a divorced gambler in Seoul, broke and in debt. A smiling stranger offers him a game of ddakji on a subway platform, and soon he is playing children's games for his life. The arena is fiction: the games were built as sets at the Daejeon Expo Science Park and later dismantled, and the island exteriors come from Seongapdo, a private island that cannot be visited.
Everything around the arena is real — the market, the corner shop, the amusement park, the airport — and this route follows those places in story order, from a schoolyard in the first episode to a park where the Salesman starts recruiting again.