six Trump explained that he was asked to keep America's founding document covered to prevent sunlight streaming in from the Oval Office's windows from causing damage. "It's never been up," he added.

The Oval Office has been the preserve of 17 US Presidents ... 1 Three 11ft 6in French windows flood the room with light. In the Second World War they were fitted with bulletproof glass.

Inside the current Oval Office, pictured below, is a blend of styles and antiques — Trump has adopted the Resolute desk (used by seven past presidents), the younger Bush's couches, Ronald Reagan ...