In the heart of the eponymous neighbourhood, Monte Testaccio, aka Monte dei Cocci, is an artificial grass-covered hill made of smashed amphorae (testae in Latin, hence the area's name, Testaccio).
Between the 2nd century BC and the 3rd century AD, Testaccio was Rome’s river port. Supplies of olive oil were transported here in huge terracotta amphorae, which, once emptied, were broken and the fragments stacked in a huge pile near the storehouses. Over time, this pile grew into a substantial 49m-high hill – Monte Testaccio.