Barack Obama swapped "banter" with three young boys during his sightseeing trip to Stonehenge, their mother has said.
Janice Raffle rushed to the famous monument with her husband and sons after hearing that the leader of the free world was paying a surprise visit.
The family, who live nearby, shook hands with the US president and chatted to him over a barbed wire fence as he toured the ancient site in Wiltshire yesterday. Mr Obama had taken advantage of his attendance at the Nato summit in Wales to visit the historic site.
Mrs Raffle told BBC Radio 4's Today programme: "He was really sweet, he asked all our names, whether we lived in the area, which we've only just moved to two weeks ago.
"He commented on the fresh air and the beautiful countryside and also said that I was quite outnumbered because I have three little boys as well as my husband."
She also told the BBC: "There was a bit of banter between the boys, saying boys are best and he said 'Well, I don't know if I agree with that'. He was really kind, it was a really amazing experience for all of us."
Her husband, James Raffle, said the chance encounter had been "incredible".
He told ITV News: "He was worried about the kids on the barbed wire fence. He was worried about Janice because she was overrun with boys."
Seeing Stonehenge had been on the president's "bucket list" of things to do and he stunned onlookers when he squeezed in the visit after the final day of the Nato summit in south Wales.