The Lego Gabby's Dollhouse The Movie Mermaid Aquarium Adventure set 11204 is a new building toy from the LEGO brand. This set allows children to create their own underwater world inspired by the popular Gabby's Dollhouse show. With a focus on imaginative play and storytelling, kids can build and play with a variety of sea creatures and accessories, such as mermaids, fish, and more. This set encourages creativity and problem-solving skills while also providing hours of fun and entertainment for young builders.