This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Fresco is one of the oldest wall painting techniques whose exact beginning cannot be pinned to a single moment or place. The origins of fresco painting are unknown, even as two of the technique's earliest and best documented appearances are identified: the palace complex at Knossos on the island of Crete, where Minoan painters covered walls with vivid, wet-plaster imagery of processions, animals and ritual scenes, and the cities of the Roman world, most famously Pompeii, where fresco decorated the interior walls of private houses on a wide scale. Between these two traditions lies a long stretch of history where the technique's use and transmission are not clearly documented, so it remains an open question whether later fresco practice descends from a single continuous tradition or was rediscovered and reworked independently by different cultures. The technique's most transformative period came much later, in Italy, developed from about the thirteenth century and perfected during the Renaissance. Painters including Cimabue and Giotto moved fresco decisively away from flatter medieval conventions, and Giotto's cycle in the Scrovegni Chapel in Padua is widely treated as a foundational turning point for how narrative and emotional expression could be handled on a plastered wall. Masaccio's frescoes in Florence's Brancacci Chapel carried this further in the following century, developing a more convincing sense of three-dimensional space and light. That Renaissance trajectory reached its most famous culmination in Rome, where Michelangelo painted the ceiling of the Sistine Chapel between 1508 and 1512 under commission from Pope Julius II, a project that came roughly two centuries after Giotto's Scrovegni Chapel and shows the clear influence of the earlier master's work. Seen across this arc, from an unrecorded starting point in the Bronze Age Aegean, through the domestic walls of Roman Pompeii, to the ceiling of a papal chapel, fresco's history is less a single unbroken line than a technique periodically reinvented and pushed to new technical and artistic limits by the cultures that took it up.