A Quad Tree is a data structure used to partition a two-dimensional space into smaller regions, making it easier to manage and query spatial data. It works by recursively dividing a square area into four equal quadrants, or "child nodes," until a specified condition is met, such as a maximum number of points in a region. This structure is particularly useful in applications like computer graphics, geographic information systems (GIS), and collision detection in video games. By organizing data in this hierarchical manner, Quad Trees enable efficient searching, insertion, and deletion of spatial information.