The site was for the rather dull-sounding Stanford Linear Accelerator Center (SLAC) in California, and was set up by one of their scientists, Dr Paul Kunz.
It wasn't very pretty and had nowhere near the cool graphics, sounds and animations that websites have now.
Three lines
He came up with the idea in September 1991 after visiting the web's "inventor", British programmer Tim Berners-Lee.
Seeing this new world wide web idea, he decided it would be a great way of showing off his centre's research.