Gamma-ray astronomy is a new emerging and very successful branch of astrophysics. Exciting results have been obtained by the current generation Cherenkov telescope systems such as MAGIC, HESS and VERITAS. MAGIC is a ground-based detector, which consists of two 17 m diameter imaging atmospheric Cherenkov telescopes on the Observatorio Roque de los Muchachos on the Canary island of La Palma. The next generation Cherenkov Telescope Array (CTA) is currently in design. CTA is a large array of many telescopes of different sizes. Its construction will start beginning of 2016 with the construction of the prototype of the large 23m diamater Large Size Telescope (LST) on the island of La Palma, close to the MAGIC telescopes. In this presentation some beautiful results from MAGIC will be shown, as well as the current design of the LST and some key science physics related to the CTA and the LST.