Photos: Take a first look inside Google's data center

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.