Ariel's Crystal Cavern

Ariel's Crystal Cavern is a set by LEGO. Recommended price of this set: €29.99. No shop has a price for this set yet.

Exploration and play awaits kids aged 4+ as they learn to build with this LEGO® ǀ Disney Princess Ariel’s Crystal Cavern (43254) building toy. This buildable mermaid playset gift helps boost kids’ problem-solving skills with creative play. Inside is a cavern with a spinning platform and slide, a whale vehicle, a shipwreck with a treasure chest and a cauldron. It also includes Ursula and Ariel LEGO ǀ Disney mini-doll figures and a Flounder LEGO ǀ Disney fish figure.

The building kit includes a Starter Brick element to get building underway quickly, and instructions are provided in a colorful picture-story guide for kids who are just starting to learn how to read. This 4+ LEGO building set for kids is easy to take on playdates and is a great way for adults to share in the building fun with youngsters. The construction kit also works well with other compatible LEGO 4+ building sets and LEGO ǀ Disney buildable playsets (sold separately) in the range.

Product data updated on 3 October 2026.