Rappelling 785 feet down a skyscraper was fun and all, but Prince Andrew says he has no plans to repeat the performance. To be more precise: "I will never do it again," he said. But the 52-year-old British royal dared today to descend most of London's Shard skyscraper—Europe's tallest—for a charity that helps inner-city children. Andrew's charity haul: about $460,000, reports Sky News. "I'm not even going to say that was a piece of cake or not," said Andrew. "I have to say the most difficult bit was walking up the stairs."