Discovery and Proof of the True Cross

Piero della Francesca's Discovery and Proof of the True Cross, painted around 1458 for the Basilica of San Francesco in Arezzo, forms part of his masterwork cycle of the Legend of the True Cross. This monumental fresco program traces the history of the wood of the Cross from the Tree of Knowledge to its recovery by Emperor Heraclius. Piero della Francesca stands apart from all his contemporaries in the particular quality of his vision: a geometrically ordered world bathed in crystalline light where human figures possess both physical solidity and an uncanny stillness that suggests meditation rather than action.

The fresco displays Piero's unmatched command of large-scale composition and geometric perspective, with figures arranged in stately groups bathed in the clear, even light that is his artistic signature.