The study of bidimensional materials is currently one of the most active fields in condensed matter physics. The first crystal of the 2D family, graphene, has quickly become a model system for low-dimensional physics, and nowadays 2D crystals represent a promising ground for a wide range of applications, from flexible electronics to energy storage. However, before the isolation of graphene in 2004, the existence of bidimensional crystals was still controversial, since previous theoretical works agreed on the instability of 2D crystals. In this talk, I will describe the curious history of the discovery of graphene and make a brief overview of its main, outstanding properties. Then, I will present the new generation of bidimensional crystals and their combination in completely novel systems, the heterostructures, an innovative and promising research line for the field of 2D crystals.