The president described the meeting with the head of the Catholic Church as the "honor of a lifetime."
Trump reading the pope's encyclical on climate change is about as likely as the pope binge-watching a season of "Celebrity Apprentice."
Donald will meet with Italian officials, Ivanka with victims of human trafficking and Melania will visit a hospital providing free healthcare.
The president will pick Callista Gingrich, Newt Gingrich's third wife, before he meets Pope Francis, say reports.
The Virgin Mary is believed to have appeared to three children in 1917, sharing three prophecies about humanity.
The long-haul journey is unusual because recent presidents have visited neighboring Canada or Mexico first.
The Vatican said in a statement Thursday that the duo would meet up May 24.
Pope Francis hopes to improve Christian-Muslim ties following a wave of attacks on the country’s Coptic minority.
“Power is like drinking gin on an empty stomach," the pope said.
Pope Francis is expected to address the International Peace Conference in Cairo at the end of April.
Pope calls the Syrian chemical weapons attack an "unacceptable massacre."
The pontiff is visiting an area in northern Italy that was hit with earthquakes in 2012.
The pope's recent suggestion that the Catholic Church discuss celibacy vows harks back to an earlier version of church practice.
Pope Francis met with Rwandan President Paul Kagame at the Vatican on Monday.
"Work gives us dignity," Pope Francis said.
Roman Catholic church head says bible reading will help people resist daily temptations.
Pope Francis was the victim of a poster campaign by critics who see him as tacking too far to the left.
The posters, which surfaced overnight, were quickly covered up by city authorities.