1969: The Queen invests Prince Charles as Prince of Wales in Caernarfon
More than 4,000 people were at Caernarfon Castle on 1 July 1969 for the investiture of Prince Charles as Prince of Wales and Earl of Chester.
A world-wide audience of 500 million people - including 19 million in Britain - watched the event.
There were 4,000 guests in the castle and 90,000 on the streets of Caernarfon.
This was the largest TV audience ever gained for an event in Wales, so for many people it would be all they knew about the country.
To celebrate the Queen's Diamond Jubilee, we look back into the BBC Wales archives for some moments from the last 60 years and visits to Wales.