Wales Great Western Colliery In Pontypridd, in the heart of the Welsh coalfield, is Hetty Shaft, one of the three mining seats that was founded by the Great Western Colliery Company.
Northern Ireland The Troubles in Northern Ireland For years, Catholics and Protestants faced each other with drawn swords in the Northern Irish city of Belfast.
Wales Relics of the coal industry in South Wales The south Welsh Rhondda valley was one of the world's largest mining regions for almost a hundred years, but after the turbulent closures, only a handful of coal mines survived.
Northern Ireland Terminus at a fishing port Ardglass in Northern Ireland has traditionally been an important fishing port. The catch of the day consists mainly of herring, shrimps and whitefish.
Wales Abandoned quarry in Snowdonia 'Welsh Slate' dominated the north-west economy of Wales from 1850 onwards. Slate was exploited in dozens of quarries, such as in the smaller Rhos, on a flank of the Moel Siabod mountain in Snowdonia.
United Kingdom Sound Mirrors, precursors of radar Between 1916 and 1930, the British Army built concrete vertical saucers along England's southern and northeastern coasts to detect enemy aircraft and airships.
Wales Iron in Wales: Blaenavon Ironworks Thanks to the use of 18th-century cutting-edge technology - coal and steam - Blaenavon Ironworks in south Wales became the second largest iron producer in the world.
Wales Ruins of a blast furnace Judging from the crumbled remains of Clydach Ironworks, you wouldn't expect more than a thousand people to have been working here in 1840.
Wales Going underground in Big Pit Thanks to Blaenavon Ironworks and the Big Pit coal mine, a Welsh, once modest village became one of the key players in the Industrial Revolution in the 19th century.
United Kingdom The cradle of the Industrial Revolution The cradle of the industrial revolution is in Ironbridge, England. Reason enough to visit the village, which owes its name to the first cast iron bridge in the world, built in 1779 over the Severn River.
6 remnants of the Battle of Berlin The fierce Battle of Berlin was the final fight at the end of World War II. The bloody confrontation, from mid-April to early May 1945, brought the Nazi regime to its knees and ended World War II.