Pope Leo XIV has celebrated mass near the Peruvian city where he made his name as a compassionate bishop who worked closely with poor and migrant communities.
The ceremony was held on Friday at a park in Pimentel, about 10km (six miles) from Chiclayo in northern Peru as part of his tour of Latin America.
The Vatican estimates more than 1.5 million people gathered to welcome the pontiff.
"Thank you for your affection, support and prayers," the Pope told followers.
"Especially for my health during this time of trial which, with God's help, I am overcoming," he added, referencing the surgery he had for lung cancer which took place just weeks ago.
Some of the crowd arrived 12 hours in advance to wait in vigil before the mass began.
"We spent the night praying, alongside family, excited to welcome the Pope from Chiclayo," said Isa Orderique.
Many came from across Peru and even neighbouring countries to attend.
Merli Cruz Guerrero, from an area near the Ecuadorean border, travelled several hours by bus to attend. She also spent the entire night waiting.
Of all the events the Pope has attended so far during his visit to Peru, this felt particularly emotional.
The crowd fell into a hushed silence as the pontiff's motorcade approached.