Updated May 29, 2026 – 9.02am, first published at 9.00amConstruction activity has become commonplace at the White House as Donald Trump pushes ahead with his controversial ballroom, but this week, a new megastructure was taking shape.Cranes helped piece together soaring arches to create an arena that will house the raw spectacle of mixed martial arts when the president hosts his much-loved Ultimate Fighting Championship on the South Lawn on June 14.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Jessica GardnerUnited States correspondentJessica Gardner is The Australian Financial Review’s United States correspondent. She was previously deputy editor - news.Fetching latest articles