This paper describes the most important techniques to create stereoscopy. At the beginning a brief summary of the history of stereoscopic viewing is outlined. The classical stereoscopy methods such as anaglyph or polarized images and the more modern techniques such as head mounted displays or three-dimensional LCD’s are described and compared. Advantages and disadvantages of each method are stated. At the end volumetric and holographic displays are described, although they don’t belong to the stereoscopy techniques.