The K3 Surface is a mathematical object that belongs to the category of three-dimensional manifolds. It is a specific type of Calabi-Yau manifold, which means it has special geometric properties that make it important in both mathematics and theoretical physics, particularly in string theory. The K3 Surface is characterized by its rich structure, including a unique ability to support complex structures and a specific type of symmetry. K3 Surfaces can be described as being smooth and compact, with a dimension of four when considering their complex structure. They can be represented in various ways, including as a quotient of a torus or through algebraic equations. The study of K3 Surfaces has implications in areas such as algebraic geometry and mirror symmetry, making them a significant topic in modern mathematical research.