What is the LEGO prize inside the treasure chest? Kids will love the welcome treasure chest with LEGO prize. All prizes are intended to be a surprise. There is no particular theme. Was this article helpful? Related articles What is the Welcome Treasure Hunt? What is the Welcome Treasure Hunt? What time is Check In/Out at the LEGOLAND California Hotel? What is the closest beach to LEGOLAND California Resort? Can we bring balloons into the Hotel?