IMG Worlds of Adventure
The world's largest indoor theme park, split across zones including Marvel, Cartoon Network, and Lost Valley's dinosaur-themed rides. Being fully indoor and climate-controlled makes it one of the most reliable family days out regardless of the season outside.
The park is genuinely large, so plan for a full half-day at minimum to see more than one zone properly, and consider a rest stop at the central IMG Boulevard, which has calmer dining options if younger children need a break from the rides.