I had the beautiful memories of the masterpieces of the art gallery in my mind when I saw this remains of the first city walls of Rome built about 24 hundreds years ago.
The servian walls were built to defend the city after the Gaul invasion of 390bc. The circuit was 11 km long and, as you can see, was made of big blocks of vulcanic stone: the tufa.
I love when my city surprise me with its memories...
Ruins in Rome are everywhere intermixed with the modern city. This pictures are good examples.