Problem is, the two castles are some 124 miles away. The mixup happened in Wales' oldest town of Carmarthen, where the group expected to see Caernarfon Castle.

To many Carmarthen Castle is one of the less impressive medieval fortresses in Wales. But the discovery of a network of medieval walls could change all that as a £3m enhancement scheme gets underway ...

"The enhancement of Carmarthen castle is of huge importance to the area," he said. "It will bring about real benefits in terms of tourism and the spin off effects for the whole community.

If there were tunnels, many of them would have led to the ancient Carmarthen Castle (Image: No credit). But not everyone is convinced there is a pattern of passageways sat beneath us in Carmarthen.

The entrance to the old prison in Carmarthen, built on the site of the town castle, which was later demolished to make way for the town's County Hall (Image: Carmarthen Journal) ...

Stop off in Carmarthen, the oldest town in Wales, to explore Carmarthen castle as well as checking out the courthouse in the middle of the town square – one of the first stops on the Keeping ...

The well preserved 12th century Carmarthen Castle overlook the River Twyi, with Visit Wales claiming "the remains of this castle are fascinating. The sheer solidity brings history to life." ...

Carmarthen in Carmarthenshire was another destination that has seen a rise in interest from Brits, with plenty of museums and attractions such as Carmarthen Castle in the region, ...

Jokes aide, the winner of Nissan’s “Built to Thrill” competition took possession of its one-off Batman-themed Nismo-prepped Juke in a ceremony that took place in front of the Carmarthen Castle.