So even 900 years ago optical illusions were a thing?

Optical illusions are the internet sensation of the moment. We can spend hours looking at the latest brain-twisters on TikTok and Instagram, and some of the best optical illusions rack up thousands of views. But although right now they're the most popular thing online after Kyle Jenner, they're hardly a new phenomenon. 

For decades artists and psychologists have played with images that can fool our brains or that can be interpreted in different ways. But none of the optical illusions we had seen so far date back as long ago as this one – which is so old that it's carved in stone.

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Joseph Foley

Joe is a regular freelance journalist and editor at Creative Bloq. He writes news, features and buying guides and keeps track of the best equipment for creatives, from monitors to accessories and office supplies. A veteran news writer and photographer, he now works as a project manager at the London and Buenos Aires-based design, production and branding agency Hermana Creatives, where he manages a team of designers, photographers and video editors who specialise in producing visual content and collaterals for the hospitality sector. He also dances Argentine tango.