The first experimental confirmations of scars were obtained in microwave billiards in the early 1990s. Further experimental evidence for scarring has later been delivered by observations in, e.g., quantum wells, optical cavities and the hydrogen atom. In the early 2000s, the first observations were achieved in an elliptical billiard. Many classical trajectories converge in this system and lead to pronounced scarring at the foci, commonly called as quantum mirages. In addition, recent numerical results indicated the existence of quantum scars in ultracold atomic gases.