A tree house is a small structure built in the branches of a tree, often used as a play area for children. These houses can vary in size and design, ranging from simple platforms to elaborate constructions with multiple rooms. They provide a unique space for imaginative play and can be found in backyards, parks, and forests. Tree houses are typically made from wood and may include features like ladders, slides, and windows. They can serve as a retreat for relaxation or a place for family gatherings. Building a tree house often involves careful planning to ensure safety and stability in the chosen tree.