Sandcastle building is a popular beach activity where individuals or groups create structures using sand and water. The process typically involves wetting the sand to make it moldable, then shaping it into various forms, such as towers, walls, and moats. Tools like buckets, shovels, and molds can enhance the building experience. This activity encourages creativity and teamwork, as builders often collaborate to design intricate castles or sculptures. Sandcastle competitions are held in many coastal areas, where participants showcase their skills and compete for prizes. Overall, sandcastle building is a fun way to enjoy the outdoors and express artistic abilities.