Thinking treasure, immediately brought to mind ancient treasures. Cosa (c. 273 BC) was an Etruscan stronghold. A Museum has been established on the site of the ruins, near the present day town of Orbetello, Tuscany. Many ancient treasures recovered there are on display.
However, I could not help but also think of modern ‘treasures’, such as those on display in the shop windows of Arezzo and Florence, Tuscany!