A BSP Tree, or Binary Space Partitioning Tree, is a data structure used in computer graphics and computational geometry to organize objects within a space. It divides a space into convex sets by using hyperplanes, which are flat subspaces of one dimension less than the space itself. This allows for efficient rendering, collision detection, and visibility determination in 3D environments. In a BSP Tree, each node represents a hyperplane that splits the space into two halves. The left and right subtrees contain objects that lie on either side of the hyperplane. This hierarchical structure enables quick access to spatial information, making it useful in applications like video games and virtual reality.