LEGO Duplo Disney Princess Ariel’s Undersea Castle

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LEGO Duplo Disney Princess Ariel’s Undersea Castle

LEGO Duplo Disney Princess Ariel’s Undersea Castle

  • from LEGO
  • We recommend this product for
    ages 2 and up
  • No batteries required


Repeat Play

Assembly & Instructions

What It Is

Kids can dive into the underwater playground of Disney Princess Ariel with the LEGO Duplo Disney Princess Ariel's Undersea Castle. This set comes with 39 pieces for building a slide and seaweed swing. There is also a treasure-filled chest with mirror and jewel bricks. The set includes rounded, transparent, and decorated seashell LEGO Duplo bricks and other assorted pastel-colored bricks and flowers. The set comes with an Ariel Duplo figure with mermaid tail, Flounder, and a Sebastian-decorated brick. The Ariel figure has a bendable waist and will stand when placed on a brick. Ariel's Undersea Castle is compatible with other Duplo Disney Princess sets as well as all other Duplo sets, which are sold separately, so kids can build their own Disney Princess kingdom.

Why It’s Fun

The LEGO Duplo Disney Princess building sets gives Disney Princess fans a whole new way to interact and imagine with the Disney Princesses. Preschoolers will love seeing Ariel, Flounder, and Sebastian in a smaller version. The easy-to-follow instructions show kids one way to build, but there are pictures in the instruction booklet of other ways to build to inspire kids to build a castle for Ariel however they want. This set will inspire lots of imaginative building play.

Who It’s For

Ariel's Undersea Castle is for ages 2–5.

What To Be Aware Of

This set took us 15 minutes to build. No matter how long it takes you to build, remember that building is part of the fun and play of LEGO.


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