When the Beatles arrived in Bangor in August 1967 they were mobbed, with the world's press watching their every move.
The man they'd come to meet at Bangor's Normal College was Maharishi Mahesh Yogi, to learn about something new and mysterious at the time -transcendental meditation.
Othe members of the party included Mick Jagger, Cilla Black and Marianne Faithfull.
While they were there, the band received some tragic news - the death of their manager Brian Epstein.
The band were at the height of their fame, but the tragedy cast a shadow over their visit.
So while we continue to celebrate the Beatles music - it's worth remembering how a snall town in North Wales played an historic part in the story of the Fab Four.