In Athens, Greece my favorite example of this is where you walk over the ancient city walls. There is a section of wall revealed by a dig in Kotzia square[1].

In Athens, Greece my favorite example of this is where you walk over the ancient city walls. There is a section of wall revealed by a dig in Kotzia square[1]. The nearby paving traces the walls, and further on the National Bank is raised up so you can see the wall continuing on.[2] [1] https://www.google.com/maps/@37.9818329,23.7288448,120m/data=!3m1!1e3 https://www.google.com/maps/@37.9818329,23.7288448,120m/data... [2] https://www.google.com/maps/place/Acharnian+Gates/@37.9808607,23.7285171,3a,75y,64.08h,90.19t/data=!3m6!1e1!3m4!1sSMnwYJac_luFVVeU1utn2g!2e0!7i16384!8i8192!4m5!3m4!1s0x14a1bd3ad8b3ebe3:0x874520e70f7ed85d!8m2!3d37.9810788!4d23.7288571 https://www.google.com/maps/place/Acharnian+Gates/@37.980860...