 Part of an old Roman bathhouse. It's 2,000 years old. And back then, it was a cold water pool. People could jump in after a hot bath. But for years, tourists have been tossing coins in there for good luck. And it brought in a lot of money for the charity that runs the bathhouse. But that changed when they closed during the pandemic and switched to contactless payments in 2022. Now, you can still make a wish or a donation for good luck. But you have to drop your coin in a box.