US President-elect Donald Trump and his wife Melania arrive at the “Make America Great Again! Welcome Celebration” at the Lincoln Memorial in Washington on Thursday. /Reuters Photo

Hours before Trump officially becomes the 45th president of the US, he promises to work hard, unify the country and “make America great for everybody” as he addresses the inaugural concert. /CFP Photo

The two-hour concert is open to the public, including a rousing rendition of “America the Beautiful” from singer Sam Moore. /CFP Photo

Fireworks light the sky over the Lincoln Memorial after the welcome celebration. / Reuters Photo