The arena has been built. Its skeletal steel dome, erected on the spot where an Easter egg roll was held in the days of the republic, rises as high as the topmost arcade of the Colosseum , towering over the White House . UFC Freedom 250, to be streamed by Paramount, will feature seven bouts fought inside an octagonal wire-mesh cage . Many people have noted the similarities to ancient gladiatorial contests. President Trump himself will occupy an arena-level seat, positioned like a Roman emperor