This photo shows a detail from the Roman museum in Perigueux. It’s part of a carefully reconstructed Roman villa which is replete with statuary and carved stonework. However, I thought this crop made for an interesting abstract image when rendered into monochrome.
At the Roman site of Cassinomagus, archaeologists have excavated the steps that surrounded and led down to the fountain or spring that would have provided the settlement with most of its fresh water. This is a detail of one corner.