Entering Lucca from Porta Elisa and going straight along Via Elisa you arrive at a big gate with a tower at each side. This is Porta Santi Gervasio e Protasio and it has just been restored by the city council. The street that cross perpendicularly via Elisa it's Via dei Fossi. Its particular feature is that a creek (english for the italian "fosso") devides the street in two according to the direction of travel; a family of duck gives to this street a touch of countryside even if in a city center.
In the middle of the junction there is a fountain of good water. People use to come and get bottles and bottles of this water to drink it at home. This is a common usage for people of Lucca, because there are a lot of these fountains all over the old town and beacuse the water from the tap doesn't taste so good.
Near the fountain there is a very good and cheap restaurant, the Antica Drogheria (look to the related tip).