A series of illustrations recounting a perfect example of layering, reuse and enhancement of the Testaccio district. Its “layered” essence has given rise to its very name and is part of its identity. The accumulation of discarded Roman amphorae (“testae”) gave rise to the Monte dei Cocci, where Testaccio was born and developed from there. A demonstration of how a critical issue to be solved was actually an opportunity for urban regeneration and integration.