Queen Diamond Jubilee visit to Wales: Send us your photos
Thousands of people are expected to turn out and greet the Queen as she begins a two-day tour of Wales.
The visit, with the Duke of Edinburgh, marks her Diamond Jubilee.
After arriving on the Royal Train at Cardiff Central railway station, the royal party is to attend a service at Llandaff Cathedral.
The royal party will then travel to Margam and Merthyr, followed on Friday by Aberfan, Ebbw Vale and Glanusk Park, near Crickhowell.
The visit will include a meeting with Wales' Grand Slam-winning rugby squad.