From breath-taking castles to tranquil religious sites and industrial titans that forged the industrial revolution, entry to 17 historic places in the care of Cadw, which normally charge admission, will be free this St David’s Day, Sunday 1 March. Cadw, the Welsh Government’s historic environment service, cares for some of Wales’ most loved history-filled places that have shaped the nation. In lieu of payment to these sites, Cadw is asking visitors to consider a voluntary...