Apple's huge new campus will open in April and hold thousands of people

Apple will soon open the door of its huge new campus, moving thousands of staff into the donut-shaped building. The campus, which brings to an end years of work, will be christened Apple Park and take up 175 acres in the Santa Clara Valley. The vision for the campus began in 2011, when Steve Jobs presented plans for the building to the council. In the six years since it has become a fascination of Apple and architecture fans, based on its huge ring-shaped design which is made entirely of the world's biggest glass panels. As well as hosting 12,000 of Apple's staff, Apple Park will also feature a visitors centre that will include an Apple Store and cafe.