Google has given a rare glimpse inside the vast data centres around the globe that power its services.
They reveal an intricate maze of computers that process Internet search requests, show YouTube video clips and distribute email for millions of people.
With hundreds of thousands of servers, colourful cables and even bicycles so engineers can get around quickly, they range from a converted paper mill in Finland to custom made server farms in Iowa.
'Very few people have stepped inside Google’s data centers, and for good reason: our first priority is the privacy and security of your data, and we go to great lengths to protect it, keeping our sites under close guard,' the firm said.
'While we’ve shared many of our designs and best practices, and we’ve been publishing our efficiency data since 2008, only a small set of employees have access to the server floor itself. 'Today, for the first time, you can see inside our data centers and pay them a virtual visit.
'On Where the Internet lives, our new site featuring beautiful photographs by Connie Zhou, you’ll get a never-before-seen look at the technology, the people and the places that keep Google running.'