This stone wall runs along the entire length of the Lungomare - to keep people from plunging off and landing down on the sharp stones below, basically. It is also a convenient place to lean or sit during a slow moment in your evening stroll along the seafront. It is often used as a community message board, in that people write all over it: both love and hate notes, phone numbers, indecent proposals, graphic representation of personal attributes or pretty flowers, you name it.
These openings in the wall are found at the end of each street that leads down toward the sea, meeting the Lungomare perpendicularly at the end of the road. There are no hills to speak of in Molfetta, but the land gradually rises as you go inland away from the sea. When it rains these openings and gravity work together to help the rainwater run down the streets and drain into the sea.
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