A sandcastle is a structure made from sand, typically built on a beach. It is created by wetting the sand to help it stick together, then shaping it into various forms, often resembling buildings or towers. Sandcastles can vary in size and complexity, from simple mounds to elaborate designs with intricate details. Building sandcastles is a popular activity for children and families during beach outings. It encourages creativity and teamwork, as people often work together to construct larger and more elaborate structures. Sandcastle competitions are also held in some areas, showcasing the artistic skills of participants.