The Madaba Map was laid as a mosaic floor sometime in the second half of the sixth century inside a Byzantine church, and though only a fraction of the original survives, roughly a quarter of its estimated original size, what remains is detailed enough to function as a genuine, if partial, atlas of the Byzantine-era Holy Land. Jerusalem occupies the map's visual center, shown from an oblique bird's-eye angle rather than as a flat plan, its walls, gates and main colonnaded street, the Cardo Maximus, rendered in enough architectural detail that scholars have used the mosaic to help locate buildings, including the Nea Church, whose exact position had otherwise been lost to time. Labels in Greek identify dozens of biblical sites across the wider region, from the Jordan River, shown with fish swimming visibly in its waters and boats crossing it, to the Dead Sea and numerous towns named in both the Old and New Testaments.
Rediscovered only in 1884, when the church above it was being rebuilt after centuries in ruins, the map had already suffered damage from the earlier structure's collapse and from later floor repairs cut directly through sections of the mosaic, so archaeologists study it today as much through what generations of restorers have carefully pieced back together as through what survived by accident. Its combination of religious purpose, decorating a church floor with the sacred geography its congregation would have recognized from scripture, and genuine cartographic ambition, attempting real geographic accuracy rather than purely symbolic representation, makes it unusual among surviving Byzantine religious art, more a devotional geography lesson than a conventional icon.