Watch Pagans and Pilgrims: Britain's Holiest Places Season 1 Online

In the first episode, Ifor explores why ruins are among the best-preserved and most-loved holy sites in Britain. He visits the famous ruins of St Andrews Cathedral, the mystical atmosphere of Wales's best-preserved Roman site, the battered remains of Coventry's iconic cathedral and the Gothic majesty of North Yorkshire's Whitby Abbey - the inspiration behind Bram Stoker's Dracula. Along the way, he asks why we're drawn to holy ruins long after their religious use is over.