Saturn (mythology)
The Temple of Saturn situated within the Roman Forum housed the state treasury.  In December, the festival of Saturnalia, perhaps the most famous of all the Roman festivals, was held in his honor — it largely consisted of a public banquet, role reversals, private gift-giving and revelry.  The planet Saturn is named after him and the modern English weekday Saturday (Latin diēs Sāturni - "Day of Saturn") bears his name.