This project provides an overview of black holes, focusing on their properties, classification, and theoretical and observational foundations. Beginning with historical context, the development of black hole concepts from Newtonian mechanics to Einstein’s General Relativity is traced. Schwarzschild’s solution is primarily examined, which describes non-rotating, uncharged black holes, and explores features like event horizons, singularities, the curvature of spacetime, and gravitational redshift. Penrose diagrams are also introduced as a means of visualization of an infinite space-time on a finite graph.