A site steeped in history, it bears witness to 2000 years of architectural history, from the Roman era to post-war modernism. The parish church St. Kolumba was reduced to ruins in 1945.

Adjacent to it, excavations have since unearthed vestiges of Roman residences, as well as buildings from later eras. The new perimeter follows the footprint of the church; its walls are built directly – and seamlessly – upon the remains of the old ones. The largest space contains excavations, the church ruin, and a chapel. With its exceptional succession of spaces, varying proportions and qualities of light, views through floor-high windows, and painstakingly elaborated details, it is a captivating yet quiet, contemplative museum.