Watch Movies2Watch. Located in the United Kingdom, the Principality of Wales, home to 2.5 million people, is filled with rolling mountains, and green valleys. Because of its culture and language, it is unique within the UK. Much of the economy is based on small independent farms, but also includes coal and slate mining. Its many castles - including Caernarfon and Conwy - comprise its most famous built landmarks. Another landmark is the Menai suspension bridge - spanning the Menai Straits - the longest such structure in the UK. As Wales is a largely coastal jurisdiction, the Welsh have taken advantage of water opportunities, whether it be for fishing, or for recreation at one of the many coastal resorts, such as the most famous, Llandudno. There are also mountain resorts, such as Betws-y-Coed. Mount Snowdon, the highest peak in Wales, offers great hiking and climbing opportunities.