In a fitting — and unexpected — capstone to their 13,000-mile journey, an Argentine family that drove in a VW bus from their home in Buenos Aires to Philadelphia met and chatted with Pope Francis on Sunday at his request.

The Walker family — four children and their parents, Noël Zemborain and Alfredo “Catire” Walker — got a phone call at 6 a.m. Sunday asking them to go immediately to the St. Charles Borromeo Seminary, Zemborain recounted on the family’s Facebook page.

“Imagine the uproar that this caused,” she wrote. “We all ran from one place to another in complete chaos.”

When they were finally there and in his presence, Francis looked at them and, laughing, said: “You are the family who traveled from Buenos Aires? You are crazy.”

They all then hugged, the pope gathering in the Walker family’s four children — Cala, 12, Dimas, 8, Mia, 5, and Carmin, 3. Cala “clung to his waist and did not leave him,” Zemborain wrote.

Pope Francis visits Philadelphia

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An unidentified child, who was carried out from the crowd to meet Pope Francis, reaches out to touch the Pontiff's face during a parade on his way to celebrate Sunday Mass on the Benjamin Franklin Parkway in Philadelphia, Sunday, Sept. 27, 2015. Pope Francis is in Philadelphia for the last leg of his six-day visit to the United States. (AP Photo/Pablo Martinez Monsivais)

“When they told me you were here, I wanted to meet you,” the pope said, adding that he has kept up with the family’s journey through 13 countries through their blog. “I’ve been following you. How good that they found you!”

The pope then turned to a church official and, in Italian, emphasized the symbolism of the family’s journey for the World Meeting of Families, according to Zemborain, who also speaks Italian.

“This is very important: A young family who has the courage to go out on a kombi and live life with joy!” Pope Francis said, using the Latin American nickname for the vintage Volkswagen buses.

After chatting a bit longer with the Walkers, he thanked them for making the journey to see him.

As he was leaving, he turned back and laughed.

“You are crazy!” he said.

The encounter, wrote Zemborain, was “the best gift for the end of the journey” — one that the family will remember for the rest of their lives.

Read about the family’s journey here.

Some of the highlights from Pope Francis's six days in Washington, D.C., New York and Philadelphia, Pa. (Monica Akhtar/The Washington Post)

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Pope Francis’s acts of humility

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TOPSHOT - In this handout picture released by the Vatican Press Office, Pope Francis performs the foot-washing ritual at the Castelnuovo di Porto refugees center near Rome on March 24, 2016. Pope Francis washed the feet of 11 young asylum seekers and a worker at their reception centre to highlight the need for the international community to provide shelter to refugees. Several of the asylum seekers, one holding a baby in her arms, were reduced to tears as the 79-year-old pontiff kneeled before them, pouring water over their feet, drying them with a towel and bending to kiss them. / AFP PHOTO / STR / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / OSSERVATORE ROMANO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS STR/AFP/Getty Images (Str/AFP/Getty Images)