The new £3.6bn Apple office has such high-tech glass walls that people keep walking into them

Apple may have spent a fortune on their brand new office complex in California but the high-tech looks come at a painful price.

Staff at Apple Park, which cost a staggering £3.6 BILLION to build, keep banging into the walls – because they are made out of ultra-transparent glass.

The glass is so clear and curved that people wandering around the vast complex seemingly can’t tell that there is anything in front of them.

The four-storey glass and metal circle building, that was designed by Norman Foster, is full of glass that has been specially treated to achieve an exact level of transparency and whiteness.

Workers transfixed by their iPhones have walking into the glass walls, according to Bloomberg, and started to stick yellow post-it notes on them to warn people that they are there.

Emergency phone calls unearthed by the San Francisco Chronicle found that staff were calling 911 to report injuries including cut and banged heads.

However, Apple thought the post-its were ruining the design of the building and removed them, replacing them with rectangular stickers on some of the glass.

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Authorities were concerned about Apple Park’s design – Cupertino’s building official Albert Salvador reportedly ‘worried’ people wouldn’t be able to tell the difference between an automatic door and a window.

Apple’s vice president of real estate and development, Dan Whisenhunt, reputedly told the Rotary Club of Cupertino in January: ‘We’ve had people bump into the glass.

‘That’s a problem we are working on right now.’