Claire McCollum explores Northern Ireland, beginning at Giant's Causeway. She speaks to a local geologist who explains how the interlocking columns of rock were formed and how he marries his science with a deep faith in a creator God. JB Gill takes a ride around the Strangford Lough in County Down with a Christian cycling group and finds out how cycling brings them closer to God. We mark the 125th anniversary of the Girls' Brigade, founded in 1893 in Dublin by Margaret Lyttle, Girls' Brigade aims to empower girls, develop skills, build friendships and explore the Christian faith. Groups now meet in 51 countries around the world and we drop in on a thriving company in Sunderland. Claire meets Philip Mulryne who left professional football behind to become a Catholic priest. Philip was signed up to Manchester United as a teenager and had many successful seasons with Norwich City, but as he reached the end of his 20s he realised there was something missing.