The Duke of York is to abseil down the Shard skyscraper in London for charity.
Andrew is to start his daredevil descent from the 87th floor - just below the top of the 1016ft tower - and finish an hour later on level 20.
The 52-year-old royal is one of around 40 people to lower themselves down Europe's tallest building for educational charity The Outward Bound Trust and the Royal Marines Charitable Trust Fund.
Other participants include Ffion Hague, the wife of Foreign Secretary William Hague, and leading businessmen and women.
The Shard is the 59th tallest building in the world, and its viewing galleries will be open to the public in February next year.