New Delhi, July 12 -- Optical illusions are all the rage on social media these days. Be it spot the difference games or finding the hidden object, there's a lot out there on the internet to give your brain a quick workout. But did you know that there are people who create artworks that are not less than any optical illusion? Mark Rox, known as pop.art.pov on Instagram, is an artist whose optical illusion-like works are going viral. Rox drops fascinating murals of his artworks and the effort that goes into creating them.

Rox, who calls himself a graffiti artist, has over 240,000 followers on Instagram. Most of his murals are located in Barcelona, Spain.

One of the clips shows behind-the-scenes process that went into making a mural of a c...