Not an illusion as such, it has been used to great effect by a wide range of painters from Mantegna to Munch.
From Savage’s portrait of the Washington family, through James Tissot’s boring old soldiers, coming full circle with a modern map of Dante’s Purgatory.
Tracing the origin of a vivid allegory in late 19th century painting, normally attributed to the Dreyfus affair. When did the naked Truth first climb out of a well, and why?
Most famously painted by David, the murder of Marat in his bath in 1793 has featured in many paintings. How has its interpretation changed with changing politics and public opinion?