BBC Four: 100 Days
BBC News teams in Washington DC and London report on the events that are shaping the world.
The broadcaster continues to trace the footsteps of 19th-century artist and geologist George Victor Du Noyer, who spent 35 years charting the landscape, people and buildings of Ireland. Martha travels north, taking in the extraordinary beauty of Dunluce Castle, and onwards to Mussenden Temple, pondering its unusual location. She also marvels at how Belfast was shaped by the Victorians, visits Kearney Point on the Ards Peninsula and journeys south to Dunmoe, which overlooks the site of the Battle of the Boyne.