This is a mold to help make a sand castle in the shape of an empire state building. Made this model using all geometric shapes from Tinkercad. This project was inspired by the Thingiversity Math Challenge: Build A Castle challenge. There are three different files: empire_sand_castle_15cm.stl is the 15 cm tall model empire_sand_castle_complete_30cm.stl is a 30 cm tall model with two pieces in one print. empire_sand_castle_part1of2_30cm.stl and empire_sand_castle_part2of2_30cm.stl is a 30 cm tall model and both can be printed to create a larger sand castle by stacking the molds one on top of the other. Print out the stl file. Fill with sand. And have fun.