The White House South Lawn has been set up as a UFC arena for a special event marking U.S. President Trump's 80th birthday and the nation's 250th anniversary. The Octagon is the centerpiece of the setup.

<img alt="A bird&apos;s-eye view of a temporary arena is being erected at the White House." height="349" src="https://i.cbc.ca/ais/efe3e7cc-396b-42d4-b18c-f16bfe0bbf58,1780603182983/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C795%2C7752%2C4360%29%3BResize%3D%28620%29" title="Work continues on a structure for the upcoming UFC fight that US President Donald Trump will host as part of the 250th anniversary of the United States on the South Lawn of the White House as seen from the Washington Monu...