Fuelled by passion and boundless faith, it’s no surprise religious monuments constitute some of our world’s greatest architectural feats. An unthinkable amount of time and money has been invested in these buildings.

New BBC One series Sacred Wonders looks at the motivation for visiting some of the world’s best-known places of pilgrimage; some come seeking quiet contemplation, others are directed by devotion, and many simply want to marvel at both the historical structures and the extraordinary religious practices taking place within their walls.