Construction crews have broken ground on a large-scale temporary UFC arena directly on the White House campus, launching preparations for an unprecedented professional cage fighting event tied to America’s milestone 250th anniversary of the Declaration of Independence. The undertaking marks a highly unusual addition to the national anniversary festivities, bringing elite mixed martial arts action to the heart of U.S. political power for the first time in modern history. Multiple project updates confirm that the massive purpose-built structure is taking shape on schedule, with work focusing on erecting the steel framework for the arena and installing the iconic octagonal fighting cage that has become synonymous with the Ultimate Fighting Championship. Organizers say the event is designed to blend American cultural celebration with popular professional sports entertainment, drawing spectators from across the country to the nation’s capital for the historic anniversary. While the event has drawn some public discussion about hosting a commercial combat sports event on White House grounds, preparations continue moving forward ahead of the scheduled anniversary celebrations.