Food: Rustic, tasty small plates or "petiscos" inside the Aguas Livres Aqueduct! It's basically a massive holding tank for water that came into Lisbon via the almost 60-km-long 18th C. aqueduct, an engineering wonder that survived the 1755 earthquake. They actually store the wine in the tunnel that connects the tank to the aqueduct!
Wine: This is a wine bar with fun flight options to learn the regions of Portugal. A must for people who dig wine and/or architecture and engineering.
My take: It is very popular with tourists. But the setting is worth a trip. Go for a glass and enjoy a historic "watering" hole and with a great selection of Portuguese wines. More on Chafariz do Vinho