U.S. President Donald Trump said on Monday (June 15) mixed martial arts fights hosted at the White House lawn, an unprecedented spectacle, were "incredible".

"The White House has never looked more beautiful. The setting was unsurpassed... one of the most exciting days in the History of our fabled White House!" wrote Trump on his Truth Social platform.

Fans react as they watch Ilia Topuria fight Justin Gaethje during their heavyweight bout at UFC Freedom 250. Photo: REUTERS/Nathan Howard

The Ultimate Fighting Championship's seven bouts, which took place on Sunday (June 14) are the first professional sporting event hosted at the White House in its history. It is part of the Trump administration's celebrations of the nation's 250th anniversary and is a centerpiece in the president's summer of sport.

U.S. President Donald Trump gestures as he attends UFC Freedom 250. Photo: REUTERS/Evan Vucci

The event, held on Trump's 80th birthday, began hours after Trump and Iranian officials announced they have a peace agreement to end the four-month-old war between their countries, which has pushed consumer prices to a three-year high, unnerving voters.