Siobhán begins by discovering some hidden gems in Co Down. Siobhán follows the footsteps of pilgrims along Saint Patrick's Way, comes face to face with some vicious Vikings, gets a bird's eye view of stunning Strangford Lough and reveals her artistic side with acclaimed artist Colin Davidson. She also samples regency life in an 18th-century mansion, and, in Belfast, conquers her fear of heights at one of the city's iconic landmarks.

The Derry Girls actress abandons her electric bike for a hydrobike to explore the island town of Enniskillen. She descends underground to experience the caves of a National Geopark, steps closer to heaven on the Cuilcagh Mountain Boardwalk, goes native at the Beaghmore Stone Circles, discovers the ancient monuments of Lough Erne, and meets a man about a sheepdog in the spectacular Sperrins.