Read our Seoul family guide: areas, where to stay and tips
An aquarium under the COEX Mall in Gangnam, now run as SEA LIFE COEX. Themed zones include a seal cove, a seahorse garden and a big ocean tank with sand tiger sharks and sea turtles. There are feeding talks and a glass-bottom boat over the shark tank.
A national science centre for children beside Changgyeonggung Palace in Jongno, with hands-on science exhibits.
A large free park in Gwangjin-gu with a small zoo, gardens, playgrounds and a small amusement area with rides, laid out for young children.
The park around Dongdaemun Design Plaza, the curved design building with changing exhibitions. It also has the Dongdaemun History Hall and the Igansumun water-gate exhibition on the old city wall.
A small walled park in Jongno where the 1919 Declaration of Independence was read aloud, starting the March 1st Movement. It holds the ten-storey Wongaksa marble pagoda in a glass case and reliefs of the independence protests.
One of the world's largest indoor theme parks, with an outdoor Magic Island, rides for all ages and parades. A full day at Jamsil.
A large aquarium under Lotte World Tower, with beluga and sea-lion zones.
Seoul's main zoo, in Gwacheon, with a children's zoo and a skylift. It is next to the National Science Museum.
A hands-on children's museum inside the National Folk Museum on the Gyeongbokgung grounds. Pair it with the palace.
A free hands-on children's museum at the National Museum of Korea in Yongsan. Book a timed session.