Wales is a country that is part of the United Kingdom. Wales has a population estimated at three million . The capital Cardiff is Wales's largest city with 317,500 people . Its area , the size of Wales , is about 20,779 km² . English is spoken by almost all people in Wales . The most popular sports in Wales are rugby union and football . The Flag of Wales incorporates the red dragon og Prince Cadwalander along with the Tudor colours of green and white . Bala lake is one of the biggest lakes in Wales. It's 80 meters high, also higher than Niagra waterfall. Welsh food includes seafood, especially close to the coast, where fishing culture is strong. Caerphilly castle is the largest in Wales. The Chepstow castle is the oldest post-roman castle on hole Britain.
league since 1992 althought , for historical reasons , two Welsh clubs ( Cardiff City and Swansea City ) play in the English Football League . Rugby league is now developing in Wales . The Wakes national rugby league team was formed in 1907 , making them the third oldest national side . Wales's other bat-and-ball sport is British Baseball , which is chiefly confinedto Cardiff and Newport , two cities with very long baseball traditioons . The Flag of Wales incorporates the red dragon og Prince Cadwalander along with the Tudor colours of green and white . It was used by Henry VII at the battle of Bosworth in 1485 after which it was carried in state to St. Paul's Cathedral . It was officially recognised as the Welsh national flag in 1959 . The Daffodil , Wales's Sunset in Aberystwyth , one of Flora emblem. The cultural capitals of Wales