Palazzo Madama, Turin
Palazzo Madama, Turin was built at the site occupied by a gate in the Roman walls belonging to the first century B.C. This palazzo was made over the ruins of a fortress from the middle ages. As I entered the building I was stunned to see the ruins showcased below. Tourists were walking over thick glass panes held in place by strong metallic structures. All of us were actually walking over those ruins.
The whole building is a harmonious mixture of ancient, medieval and modern architecture.