Modica old town matters because it was rebuilt after the earthquake of 9 and 11 January 1693, a disaster that killed 3,400 people in the city and forced a full rethink of how the place should work.[13] Before that, Modica had grown around medieval power: the County of Modica, under families such as the Mosca, Chiaramonte, and Cabrera, had made the town a serious feudal center in Sicily, with authority and wealth that rivaled higher powers.[3][9]

The turning point was not just ruin, but reconstruction. Unlike some other towns in the Val di Noto, Modica was rebuilt on the same site, and the effort reorganized the city into the two levels visitors still feel today: Modica Alta above and Modica Bassa below, stitched together by steep streets and stairways.[7][12] That choice kept the old topography alive instead of erasing it, so the town’s post-earthquake Baroque faces still sit over a much older medieval skeleton.[7][14]

A visitor can still read that history in the slope of the streets, the split between upper and lower town, and the churches and palaces that line the valley floor.[7][14]