Matt Smith, who plays the Doctor in BBC’s Doctor Who, and Welsh-born film star Luke Evans have starred in videos for VisitBritain promoting the virtues of Cardiff and Wales.
A shortened version of the adverts appeared on screen during the Wales v Australia rugby match on Saturday 3 December.
Wales is where Doctor Who is filmed, and Smith describes Cardiff as his 'second' home, discussing the positives of filming in the area and the locations used in the show.
Smith also discusses the people in Wales, and says that a ‘must’ for people visiting the area is to go to a six nations rugby match.
He said: "I like the way the Welsh are so passionate about their sport and on a Saturday when the rugby is on, Cardiff becomes rugby orientated in a way that not many cities are.”
Evens, who has appeared in films such as Robin Hood, The Three Musketeers and The Immortals, also appeared in a video as part of the 'GREAT Britain - You’re Invited’ campaign.
He said: "“Wales is blessed with some truly magnificent castles, full of history and a must see for visitors. We have Caerphilly Castle which still looks very impenetrable even in this day and age, then there is the beautiful Castell Coch and of course the grand castle in Cardiff."
Laurence Bresh, marketing director at VisitBritain, said: “Two globally recognised stars in their own right are now on board to inspire the world to visit Wales as part of our ‘GREAT Britain - You’re Invited’ campaign. We are honoured to add both Matt and Luke to our ‘dream team’ of global ambassadors.
“Doctor Who is one of the BBC’s most watched shows around the world, so having Matt on board is a perfect fit for our ambitions to increase international visits to the UK. It is a great endorsement of all the wonderful experiences that can be found by visitors if they go to Wales.
“Luke Evans is fast becoming a major Hollywood star and provides some compelling reasons why people should visit his homeland. His passion for Wales is palpable for all to see, and when he breaks into song it is a truly inspiring moment that shows the kind of warm welcome that overseas guests can look forward to.”