3D, aka three-dimensional films, give viewers who wear special glasses the impression that the film’s characters and objects are actual three-dimensional things occupying the space around the viewer. 
Some of the most famous 3D films include James Cameron’s The Avatar (2009), Alfonso Cuarón’s Gravity (2013), Pixar’s Toy Story 3 (2010) and Dreamworld’s How to Train Your Dragon (2010).
Since they are all quite recent and there are not so many famous 3D films yet, one might get the impression that they are a relatively recent phenomenon. However, the history of 3D cinema actually goes back more than a hundred years. The first screening of a 3D film dates to 1922 even though the technology existed already decades earlier. Even the cult classic Creature From The Black Lagoon (1954) is actually a 3D film! So what has prevented 3D movies from becoming more common? One reason is technology. Producing and displaying a 3D movie is more expensive. Since filmmaking is costly and risky anyway, most studios seem to have wanted to stay clear of such investments.
But perhaps the time of 3D films has finally arrived. With houses becoming more and more comfortable and technology getting cheaper, it is easy to anticipate that sometime in the near future, people will have 3D film viewing devices at home which would bring huge audiences to new 3D films. What could be a more relaxing Sunday evening than chilling at home on your Royal Design sofa, watching a 3D nature documentary where you get the impression you are in the African savanna, surrounded by elephants and dozens of other animals? Or imagine watching a historical film where the past literally seems to come to life around you in the comfort of your own home. With virtual reality, technology also moving forward rapidly, staring at two-dimensional images might soon be history.
