See the Octagon, the iconic eight-sided fenced cage where mixed martial arts fighters compete and other infrastructure being built for UFC Freedom 250 on the South Lawn of the White House to mark U.S. President Donald Trump's 80th birthday and the 250th anniversary of the United States.

From its high-dollar price tag to the celebrities expected to watch ringside and what taxpayers may end up paying for—everything we know about UFC Freedom 250.

See the Octagon, the iconic eight-sided fenced cage where mixed martial arts fighters compete and other infrastructure being built for UFC Freedom 250 on the South Lawn of the…

The event, coinciding with his 80th birthday, is billed as part of the celebrations for the 250th anniversary of U.S. independence