BBC Four HD Monday

Fiona Bruce and Philip Mould examine an 18th-century landscape that could be a lost work by of one of the biggest names in British art, Thomas Gainsborough

Richard Miles explores how archaeological discoveries in the 18th and 19th centuries overturned previously formed ideas of when and where civilisation began

In Northern Ireland, the graveyard of a Victorian workhouse sheds light on one of the most traumatic periods of modern Irish history, the Great Famine of 1845